| 1 |
Corolla inside with 5 tufts of hairs above base; seeds with 25-50 hairlike appendages at hilar end (unknown in A. sinolongicalyx). |
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(2) |
| + |
Corolla inside glabrous to pubescent or glandular, without tufts of hairs (unknown in A. maculatus); seeds with 1 or 2 hairlike or linear appendages at hilar end (unknown in A.
angustioblongus. A. angustissimus. A. dolichanthus. A. lancilimbus. A. lasianthus. A. lasiocalyx. A. medogensis. A. pachytrichus. A. planipetiolatus, and A. tubulosus). |
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(4) |
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| 2 (1) |
Calyx 3-3.3 cm; corolla 2.4-2.8 cm; stems to 5 m |
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34 Aeschynanthus sinolongicalyx |
| + |
Calyx to 1.5 cm; corolla 1.8-2 cm; stems to 40 cm. |
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(3) |
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| 3 (2) |
Calyx and corolla glabrous outside; calyx segments ca. 15 mm; corolla yellow-green; seeds with ca. 25 hairlike appendages at hilar end; leaves always opposite; leaf blade with adaxial surface drying wrinkled |
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32 Aeschynanthus longicaulis |
| + |
Calyx glandular puberulent outside, ca. 5 mm; corolla red, sparsely puberulent outside; seeds with ca. 50 hairlike appendages at hilar end; leaves opposite or in whorls of 3; leaf blade with adaxial surface drying nearly smooth |
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33 Aeschynanthus poilanei |
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| 4 (1) |
Leaf blade puberulent to pubescent at least on one surface, often glabrescent. |
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(5) |
| + |
Leaf blade glabrous. |
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(9) |
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| 5 (4) |
Leaf blades drying papery, margin often 1- or 2-denticulate near apex, abaxially rust-brown pubescent; stems 20-50 cm; pedicel ca. 3 mm; corolla yellow to white; anthers of 4 stamens coherent at apex, ca. 3 mm |
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22 Aeschynanthus denticuliger |
| + |
Leaf blades drying leathery, margin entire, abaxially puberulent; stems to 30 cm; pedicel 4-10 mm; corolla red, often with yellow spots on central abaxial lip lobe; anthers coherent in pairs, 1-2 mm. |
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(6) |
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| 6 (5) |
Stems puberulent to glabrescent; petiole to 2 mm; leaf blade adaxially drying or wrinkled. |
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(7) |
| + |
Stems densely spreading hispid, sometimes glabrescent; petiole 1-15 mm; leaf blade adaxially drying smooth. |
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(8) |
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| 7 (6) |
Leaf blade adaxially glabrous, base attenuate to broadly cuneate; cymes pseudoterminal; calyx 5-lobed from near or above middle, segments 2-2.5 mm; corolla inside with short, thick hairs near base, adaxial lip nearly erect; staminode ca. 1 mm; capsule 4.5-6 cm; seed appendages 6-10 mm |
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17 Aeschynanthus humilis |
| + |
Leaf blade adaxially puberulent, glabrescent, base cuneate to rounded; cymes axillary; calyx 5-sect from base, segments ca. 4 mm; corolla inside glabrous, adaxial lip reflexed; staminode ca. 6.5 mm; capsule 9-12 cm; seed appendages 15-20 mm |
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20 Aeschynanthus gracilis |
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| 8 (6) |
Leaves mostly clustered near stem apex; petiole 1-4(-8) mm; leaf blade obovate to oblong obovate or elliptic, base attenuate to cuneate; cymes pseudoterminal, 2-5-flowered; calyx glabrous outside; corolla 1.7-2 cm, inside puberulent basally; capsule 6-8 cm |
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18 Aeschynanthus andersonii |
| + |
Leaves in whorls of 3; petiole 10-15 mm; leaf blade narrowly ovate to ovate, base rounded; cymes axillary, 1-flowered; calyx sparsely puberulent outside; corolla ca. 2.9 cm, inside glabrous; capsule ca. 12 cm |
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19 Aeschynanthus mengxingensis |
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| 9 (4) |
Stems pubescent, sericeous, or glandular at least near branch apices. |
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(10) |
| + |
Stems glabrous even when young. |
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(12) |
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| 10 (9) |
Leaf blade 0.7-2 cm, apex acute to rounded; stems glabrous, glandular near apex; leaves opposite or in whorls of 3; corolla mouth oblique, limb distinctly 2-lipped, adaxial lip ca. 1/2 X length of abaxial lip |
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21 Aeschynanthus buxifolius |
| + |
Leaf blade 2.9-12.2 cm, apex attenuate to acute; stems pubescent or sericeous, often glabrescent; leaves opposite; corolla mouth not oblique, limb indistinctly 2-lipped, lips nearly equal. |
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(11) |
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| 11 (10) |
Stems rust-brown pubescent; petiole 2-3 mm; leaf blade linear to narrowly oblanceolate, 0.4-0.7 cm wide, base attenuate; peduncle 5.2-10 cm; calyx lobes 3.2-4.5 mm wide; corolla glabrous outside |
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8 Aeschynanthus angustissimus |
| + |
Stems brown-sericeous, glabrescent; petiole 3.5-10 mm; leaf blade narrowly ovate to ovate or elliptic, 1.4-2.9 cm wide, base cuneate to rounded; peduncle absent; calyx lobes 0.6-2 mm wide; corolla pilose outside |
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15 Aeschynanthus lasianthus |
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| 12 (9) |
Calyx (3-)5-lobed, tube at least 2 mm. |
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(13) |
| + |
Calyx 5-sect from base, without tube. |
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(22) |
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| 13 (12) |
Leaf blade 4-6.3 cm, abaxially sparsely punctate; calyx tube ca. 2 mm in diam. at mouth; ovary puberulent |
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10 Aeschynanthus lancilimbus |
| + |
Leaf blade 5-23 cm, abaxially not punctate; calyx tube 3-8 mm in diam. at mouth; ovary glabrous. |
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(14) |
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| 14 (13) |
Calyx lobes 5-9 mm; leaf blade papery; lateral veins distinct |
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24 Aeschynanthus dolichanthus |
| + |
Calyx lobes 1-5(-7) mm; leaf blade papery to thick leathery; lateral veins indistinct or invisible. |
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(15) |
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| 15 (14) |
Pedicels and outer calyx surface puberulent or glandular puberulent; calyx 4-7 mm. |
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(16) |
| + |
Pedicels glabrous; calyx 9-15 mm. |
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(18) |
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| 16 (15) |
Leaf blade nearly linear to narrowly oblanceolate or narrowly elliptic, 0.8-2(-3) cm wide, base attenuate, adaxially drying wrinkled; stems ca. 100 cm |
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31 Aeschynanthus tengchungensis |
| + |
Leaf blade narrowly elliptic or oblong to oblanceolate-oblong, 1.8-4.5 cm wide, base cuneate, adaxially drying smooth or nearly smooth; stems ca. 30 cm. |
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(17) |
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| 17 (16) |
Corolla ca. 5.8 cm; leaf blade 7-9 X 1.8-3.3 cm, papery to thin leathery; petiole 5-9 mm; pedicel ca. 12 mm; calyx ca. 7 mm, lobes 3.2-5 mm; style puberulent |
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25 Aeschynanthus lasiocalyx |
| + |
Corolla ca. 3 cm; leaf blade 11-13 X 2.8-4.5 cm, thick leathery; petiole 9-15 mm; pedicel 4-5 mm; calyx ca. 4 mm, lobes 1.5-1.8 mm; style glabrous |
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26 Aeschynanthus medogensis |
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| 18 (15) |
Corolla 2-3 cm; calyx red-purple or tinged red-purple. |
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(19) |
| + |
Corolla 4-5.5 cm; calyx green. |
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(20) |
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| 19 (18) |
Leaf blade 2.3-4 cm wide, base broadly cuneate, apex acuminate; bracts 5-9 mm |
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29 Aeschynanthus hookeri |
| + |
Leaf blade 1-2.5 cm wide, base attenuate, apex caudate or caudate-acuminate; bracts ca. 3 mm |
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30 Aeschynanthus maculatus |
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| 20 (18) |
Calyx 9-10 mm; corolla abaxial lip ca. 1 cm, inside with subulate and triangular hairs basally; staminode ca. 0.5 mm; style ca. 3.2 cm; leaf blade papery to thin leathery; cymes 2-4-flowered |
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28 Aeschynanthus pachytrichus |
| + |
Calyx 12-15 mm; corolla abaxial lip 5-6 mm, inside puberulent below middle or sparsely pubescent basally; staminode 5-6 mm; style 1-1.8 cm; leaf blade leathery; cymes 2-11-flowered. |
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(21) |
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| 21 (20) |
Leaf blade adaxial surface drying smooth; bracts deciduous; corolla mouth not oblique; anthers 1.2-2 mm; seeds with 1 hairlike appendage at hilar end |
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16 Aeschynanthus macranthus |
| + |
Leaf blade adaxial surface drying wrinkled; bracts persistent; corolla mouth slightly oblique; anthers 3-4 mm; seeds with 2 hairlike appendages at hilar end |
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27 Aeschynanthus mimetes |
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| 22 (12) |
Leaf blade 10-20 X 4.4-10.5 cm; cymes 5-15-flowered; bracts persistent, 4-5.5 cm; calyx segments 2-3 cm; corolla 5.5-8.5 cm; capsule 32-52 cm |
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6 Aeschynanthus superbus |
| + |
Leaf blade 1.7-13 X 0.6-6.1 cm; cymes 1-7-flowered; bracts deciduous or persistent, 0.2-3 cm; calyx segments 0.2-1.9 cm; corolla 1.5-4.2 cm; capsule 3-29 cm (unknown in A. planipetiolatus and A. angustioblongus). |
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(23) |
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| 23 (22) |
Bracts persistent, ovate to suborbicular; calyx segments ovate to ovate-oblong or obovate. |
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(24) |
| + |
Bracts persistent or deciduous, linear to ovate; calyx segments linear to lanceolate, linear-oblanceolate, elliptic, or subulate. |
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(25) |
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| 24 (23) |
Leaves 1.4-3(-5) cm wide; peduncle 0.8-3 cm; bracts and calyx reddish, bracts 3-9 X 4-10 mm; corolla 1.5-2.2 cm; anthers 1.5-2 mm; style glabrous; capsule 6.5-16 cm |
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1 Aeschynanthus acuminatus |
| + |
Leaves (1.8-)2.4-5.5 cm wide; peduncle (3.5-)7-14 cm; bracts and calyx green, bracts 6-10 X 4-5 mm; corolla 2.8-3 cm; anthers ca. 3 mm; style puberulent; capsule 12-29 cm |
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2 Aeschynanthus moningeriae |
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| 25 (23) |
Leaf blade to 3 cm; capsule 3-3.5 cm |
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11 Aeschynanthus tubulosus |
| + |
Leaf blade 1.8-13 cm; capsule 5-26 cm (unknown in A. angustioblongus and A. planipetiolatus). |
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(26) |
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| 26 (25) |
Bracts persistent, rarely deciduous, red to purple, 10-30 mm; calyx red, 11-19 mm. |
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(27) |
| + |
Bracts deciduous, rarely persistent, green, 2-13 mm; calyx green, sometimes tinged reddish or reddish, 3-11 mm. |
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(28) |
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| 27 (26) |
Leaf blade broadly lanceolate to elliptic, ovate, or obovate, 1.5-6.1 cm wide, base cuneate to rounded or subcordate; bracts lanceolate to ovate, 15-30 X 6-14 mm; corolla glabrous inside; ovary glandular puberulent |
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5 Aeschynanthus bracteatus |
| + |
Leaf blade narrowly to broadly oblanceolate or rarely lanceolate, 0.6-2.5(-3.3) cm wide, base cuneate to attenuate; bracts lanceolate, 10-18 X 4-5(-8) mm; corolla inside sparsely glandular puberulent above; ovary glabrous |
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7 Aeschynanthus linearifolius |
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| 28 (26) |
Petiole 6-21 mm; leaf blade 5-12 cm; cymes 1-4-flowered. |
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(29) |
| + |
Petiole 2-10 mm; leaf blade (1.8-)3-7.4 cm; cymes 1-3-flowered. |
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(30) |
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| 29 (28) |
Bracts lanceolate to narrowly ovate, 6-13 mm; calyx segments 7-9 mm, outside glabrous; corolla outside glabrous, inside sparsely glandular puberulent below abaxial lip; capsule 7-10 cm; seed appendages 1 at each end, 1.5-2 mm; peduncle absent to 0.5(-1) cm; leaf blade margin entire to shallowly crenulate |
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4 Aeschynanthus wardii |
| + |
Bracts linear to lanceolate, ca. 6 mm; calyx segments 4-7 mm, outside glabrous to rust-brown pubescent; corolla outside sparsely puberulent, inside glabrous; capsule 15-25 cm; seed appendages 2 at hilar end, 8-12 mm, 1 at opposite end, 15-20 mm; peduncle absent; leaf blade margin entire |
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23 Aeschynanthus lineatus |
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| 30 (28) |
Pedicel 4-8 mm, sparsely puberulent; calyx outside puberulent to glabrous |
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14 Aeschynanthus austroyunnanensis |
| + |
Pedicel 5-22 mm, glabrous; calyx glabrous outside. |
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(31) |
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| 31 (30) |
Pedicel 10-22 mm; leaf blade base attenuate, papery; corolla puberulent outside |
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13 Aeschynanthus angustioblongus |
| + |
Pedicel 5-11 mm; leaf blade base cuneate to rounded, thick leathery to papery; corolla glabrous outside. |
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(32) |
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| 32 (31) |
Cymes 1-3-flowered; peduncle 2.2-5(-7) cm; corolla mouth slightly to strongly oblique; stems 60-100 cm |
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3 Aeschynanthus stenosepalus |
| + |
Cymes 1-flowered; without peduncle; corolla mouth not oblique; stems to 30 cm. |
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(33) |
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| 33 (32) |
Petiole 3-4 mm; leaf blade 1.4-2.5 cm wide, thin leathery; calyx segments 7.5-10 mm; style glabrous |
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9 Aeschynanthus acuminatissimus |
| + |
Petiole 5-10 mm; leaf blade 2-3.4 cm wide, thick leathery; calyx segments ca. 5 mm; style glandular puberulent |
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12 Aeschynanthus planipetiolatus |
