380 A FLORA OP MANILA 



8. CONCHOPHYLLUM Blume 



Epiphytic, twining or pendulous vines, with abundant milky sap and 

 fleshy leaves. Leaves opposite or by abortion alternate, entire, thick, oblong 

 to lanceolate and plane, or rounded and closely appressed to the trunks and 

 branches of trees, usually with few to many axillary or extra-axillary root- 

 lets. Flowers small, few to many, subumbellately or racemosely disposed 

 near the tips of short or elongated, thickened peduncles which are marked 

 with numerous scars of fallen pedicles. Calyx small, 5-toothed. Corolla 

 Eubglobose, or cylindric and globose at the base, 5-toothed, with 5 inflexed 

 scales at the contraction of the tube, the tube villous above the swollen 

 base. Staminal column included, B-angled, not appendaged on the back, 

 the anthers tipped with a thin appendage; pollen-masses 1 in each cell. 

 Ovary of 2 carpels. Follicles slender, acuminate, thin. Seeds small, coma 

 white, silky. (Greek "shell" and "leaf" in allusion to the peculiar hollow 

 leaves of some species.) 



Species about 8, Malay Peninsula to New Guinea, 4 or 5 in the Philippines^ 



1. C.merrillil Schltr. 



A glabrous, fleshy, much-branched, epiphytic vine with abundant milky 

 sap, growing in small to large masses, the stems grayish, 2 to 5 mm in di- 

 ameter, pendulous or climbing, often twining, reaching a length of 2 to B 

 meters. Leaves oblong to narrowly oblong, 4 to 10 cm long, 1 to 2 cm wide, 

 apex acute or apiculate, base acute, fleshy, 8 to 4 mm thick, the nerves none, 

 the midrib obsolete or nearly so. Racemes axillary, the rachis short, thick, 

 marked with numerous scars, bearing but few flowers at one time. Flowers 

 rather bright-purple, their pedicels about 2 cm long, purple. Sepals oblong- 

 ovate, obtuse, 1 mm long. Corolla swollen and globose at the base, about 3 

 mm in diameter, contracted above into a cylindric tube- about 3.5 mm long, 

 the tube with 5 appendages inside at the constriction, the reflexed parts gla- 

 brous, villous above the swollen base. 



On various trees, Masambong, fl. Feb.-Sept. ; known only from the vicin- 

 ity of Manila. 



9. HOYA R. Brown 



Twining or pendulous, epiphytic, fleshy vines with abundant milky sap. 

 Leaves opposite, fleshy, thick. Flowers in axillary racemes or umbels on 

 thickened pedicles, or cymose. Calyx small, 5-partite. Corolla rotate, fleshy 

 or waxy, the lobes 5, often convex, spreading or reflexed. Corona-processes 

 5, large, more or less fleshy, adnate to the staminal-column, the lower lobe 

 spreading or ascending, often concave on the upper surface, the upper lobe 

 usually produced into an erect tooth or process. Staminal-column sh8rt, 

 attached to the base of the corolla; anthers conniving over the apex of the 

 style, thin, the appendages membranaceous, erect or inflexed; pollen-masses 

 1 in each cell. Ovary of 2 distinct carpels. Fruit of 1 or 2 follicles, the 

 pericarp thin; seeds comose. (In honor of T. Hoy, and English gardener.) 



Species 80 or more, tropical Asia to Australia, about 20 in the Philippines. 



1. H. luzonica Schltr. 



A climbing, somewhat branched,, glabrous vine with abundant milky sap, 

 3 to 4 m high. Leaves oblong, fleshy, acute or slightly acuminate, 9 to 13 Cm 

 long, the lower surface obscurely white-puncticulate, Ihe nerves in fresh 

 leaves scacely visible; petioles thickened, 1.5 to 2.5 cm long. Umbels axil- 

 lary, solitary, the peduncles up to 7 cm long, the pedicels slender, 1 to 2.5 



