|
|
|
7. Phacellaria Bentham in Bentham & J. D. Hooker, Gen. Pl. 3: 229. 1880.
重寄生属 chong ji sheng shu
Subshrubs or herbs, usually epiparasitic on the stems of species of Loranthaceae and Dendrotrophe. Leaves alternate, reduced to rudimentary scales. Inflorescences axillary, 1-flowered or densely clustered. Flowers bisexual or unisexual (plants dioecious, monoecious, or polygamous), sessile, minute. Male flowers: perianth tube short, lobes 3-6, valvate. Stamens as many as and opposite to perianth lobes; filaments short, compressed; anthers cordate, 2-celled, dehiscence longitudinal. Discs flat or slightly conic. Female flowers: lobes 4-8, valvate. Ovary inferior, 1-loculed; ovules 2 or 3. Bisexual flowers similar to female ones, except with stamens. Fruit a drupe, ellipsoid, with persistent lobes and discs at apex, exocarp fleshy, endocarp bony, 5- or 6-furrowed. Seed 1; endosperm copious; embryo small.
Eight species: tropical and subtropical SE Asia; six species (two endemic) in China.
All known species are epiparasites growing on Dendrotrophe and members of the Loranthaceae.
|
|
|
|
| 1 |
Flowers bisexual, solitary; bracts 1-1.3 mm, apex reflexed; stems to 8 cm, unbranched. |
|
1 P. fargesii |
| + |
Flowers mostly unisexual (plants monoecious or dioecious, rarely polygamous), solitary or eventually in clusters; bracts to 1 mm, apex not reflexed; stems to 30 cm, branched or unbranched. |
|
(2) |
| |
|
|
|
| 2 (1) |
Stems branched and rebranched; bracts conspicuous, ca. 1 mm; flowers solitary. |
|
2 P. caulescens |
| + |
Stems unbranched or with a few short lateral branches; bracts smaller, less than 1 mm; flowers eventually in clusters. |
|
(3) |
| |
|
|
|
| 3 (2) |
Flower clusters few flowered, globose. |
|
5 P. rigidula |
| + |
Flower clusters eventually many flowered, elongated along rachis. |
|
(4) |
| |
|
|
|
| 4 (3) |
Plant sparsely papillose-hairy when young, soon glabrous; bracts to 0.5 mm. |
|
6 P. tonkinensis |
| + |
Plant ferruginous-tomentose when young, indumentum persistent at least around inflorescence; young bracts to 1 mm. |
|
(5) |
| |
|
|
|
| 5 (4) |
Stems at least partly flattened; drupe ovoid-ellipsoid, 4-6 × 1.5-4 mm in diam. |
|
3 P. compressa |
| + |
Stems terete; drupe globose, ca. 2.5 × 2.5-3 mm in diam. |
|
4 P. glomerata |
|
|
|
Lower Taxa
| Related Links (opens in a new window) |
|
Treatments in Other Floras @ www.efloras.org
Other Databases
|
|
|
|
|
|
|
|
|
