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18. Boeica C. B. Clarke, Commelyn. Cyrtandr. Bengal. 118. 1874.
短筒苣苔属 duan tong ju tai shu
Boeicopsis H. W. Li.
Subshrubs or herbs, perennial, epipetric or terrestrial, rhizomatous, sometimes stoloniferous, stemmed or seldom stemless. Leaves few to many, on stem and alternate, crowded near stem apex or basal; leaf blade puberulent to densely woolly or glabrescent, base cuneate to attenuate. Inflorescences lax, sometimes umbel-like, axillary, 1- to many-flowered cymes; bracts 2 and opposite, rarely several and whorled. Calyx actinomorphic, 5-sect from base; segments equal. Corolla white to pink or blue to purple, zygomorphic, inside glabrous or puberulent; tube campanulate, not swollen, sometimes saccate at base, slightly shorter than limb, 3-7 mm in diam.; limb slightly 2-lipped; adaxial lip 2-lobed, slightly shorter than to as long as abaxial lip; abaxial lip 3-lobed, lobes equal or subequal, apex rounded to acute. Stamens 4, adnate to corolla near base, included; anthers basifixed, free, thecae subparallel, confluent at apex, dehiscing longitudinally, poricidally, or transversely; connective not projecting; staminode 1, adnate to adaxial side of corolla tube. Disc ringlike or inconspicuous. Ovary ovoid or conical, 1-loculed; placentas 2, parietal, projecting inward, 2-cleft. Stigma 1, terminal, capitate, undivided. Capsule straight in relation to pedicel, linear to narrowly oblong, much longer than calyx, dehiscing loculicidally to base; valves 2, straight, not twisted. Seeds unappendaged.
About 12 species: Bhutan, S China, N India, Myanmar, N Vietnam; seven species in China.
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| 1 |
Style with 2 broad and flat winglike appendages; petiole and leaf blade hirsute adaxially; corolla tube saccate at base; ovary glabrous |
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7 Boeica yunnanensis |
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Style unappendaged; petiole and leaf blade villous, woolly, or puberulent adaxially; corolla tube not swollen; ovary sparsely puberulent to villous. |
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(2) |
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| 2 (1) |
Cymes 1-flowered; lateral veins 4-6 on each side of midrib; plants always stemless; corolla 10-12 mm; anthers dehiscing longitudinally |
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3 Boeica guileana |
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Cymes 3- to many flowered; lateral veins 7-16 on each side of midrib; plants with stems (0.5-)4-30 cm; corolla 3-6 mm; anthers dehiscing poricidally or transversely (unknown in B. fulva). |
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(3) |
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| 3 (2) |
Pedicels 10-20 mm; stems 0.5-7 cm; bracts 4-7 mm. |
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(4) |
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Pedicels 0.4-2.5 mm; stems 6-14 cm; bracts 1-5 mm. |
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(5) |
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| 4 (3) |
Leaf blade broadly elliptic or ovate to obovate, 3.5-10 X 2.8-5.5 cm, adaxially villous, base cuneate to rounded, margin serrulate to serrate; lateral veins 7-9 on each side of midrib |
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2 Boeica stolonifera |
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Leaf blade ovate-elliptic, 8-20 X 3-11 cm, adaxially appressed puberulent, base attenuate, margin coarsely serrate; lateral veins 10-13 on each side of midrib |
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4 Boeica ferruginea |
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| 5 (3) |
Leaf blade margin irregularly shallowly denticulate, adaxially woolly, glabrescent; peduncle 10-15 cm |
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6 Boeica fulva |
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Leaf blade margin serrate, adaxially densely puberulent or sparsely villous; peduncle 3.5-10 cm. |
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(6) |
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| 6 (5) |
Leaf blade adaxially sparsely villous, abaxially sparsely villous, veins densely villous; lateral veins 8-11 on each side of midrib; anthers dehiscing poricidally; peduncle densely villous |
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1 Boeica porosa |
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Leaf blade adaxially densely puberulent, abaxially woolly; lateral veins 14-16(-20) on each side of midrib; anthers dehiscing transversely; peduncle pubescent |
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5 Boeica multinervia |
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Lower Taxa
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