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FOC | Family List | FOC Vol. 5 | Santalaceae

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


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