380 A FLORA OF 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 
subglobose, 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, 5-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.merrillii 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 3 
meters. Leaves oblong to narrowly oblong, 4 to 10 cm long, 1 to 2 cm wide, 
apex acute or apiculate, base acute, fleshy, 3 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 short, 
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, 
3to4m high. Leaves oblong, fleshy, acute or slightly acuminate, 9 to 13 cm 
long, the lower surface obscurely white-puncticulate, the 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 
