1064 ASCLEPIADACEAE 
FAMILY 2. ASCLEPIADACEAE — MiLKWEED FAMILY 
Perennial herbaceous or woody plants, with usually umbel- like eymes. 
the 
Androecium of usually 5 stamens, with the anthers more adherent to the 
stigma than in Apocynaceae, the filament-appendages fo n a a crown 
with 5 lobes. Gynoecium of 2 earpels with the stigmas unite ne 
um d; 
earpel usually maturing.—About 240 genera and 2,000 SN p 
distributed. 
Pollen granular, the grains grouped in 4's: caudicles spoon-shaped, without a cor- 
pusele. I. PERIPLOCEAE. 
Pollen polus m 2 waxy masses (pollinia) : eaudicles united by 
Pollinia SET us: stigma not saucer-shaped nor cup- ike: 
anthers tipped with a scarious membrane, the sacs lower 
than the top of the stigma. II. ASCLEPIADEAE. 
Pollinia horizontal or nearly so: stigma saucer- -shaped or 
cup-like: anthers scarcely or not at all tipped with a 
er membrane, the saes on the margin of or close 
he stigma. III. VINCETOXICEAE. 
PERIPLOCEAE 
More rotate: follicles long subulate, nearly terete, erect: 
several-many-flow red. 1. PERIPLOCA. 
Corolla. a follicles P and stout, irregularly 
ngled, divergent: cymes few-flowered. 2. CRYPTOSTEGIA. 
II. ASCLEPIADEAE 
Crown double, the outer a nom ring, the inner consisting 
of 5 ed hook-like scales 3. FUNASTRUM. 
Crown single 
Erect, ascendi ing, or spreading herbs. 
Coro lla ellipsoid- ET T lobes erect. 4. PODOSTIGMA. 
Corolla rotate, the lobes spreading or reflexed in 
e. 
Corolla- Es reflexed during anthesis: hoods o 
e xn erestless or each with a horn-like 
Ande: wings c corneous: pollinia longer than the 
Hoods of the crown without horns or crests. 5. ACERATES. 
Hoods of the AN each with an internal 
oje 
Hoods scoop-like or trowel-like, D free 
. edges, the horn free or partl y adnate 
the hood: flower-buds So flat- 
topped. 6. ASCLEPIAS. 
Hoods saccate or with the sides con 
rone the 2 sacs: flower-buds flat 
7. BIVENTRARIA. 
Hoods "In gate, dorso-ventrally flat- 
tened, the horn protruding from 
is - flower-buds not flat-topped. 8. OXYPTERYX. 
Anther-wi ues mbranous or papery: hoods of 
the crown ellipsoid- -clavate, ascending and in- 
curved over the anthers, each with a nade 
E d within: pollinia shorter than t 
es 
Corolla-lobes — erect-spreading E anthesi 
ho E t oe he pendulous or —— a 
t bas ved upwards, obtuse, crested 
within, E feast in the upper par 
Hoods of the crown involute, and hooded at the 
apex, crested above the middle: anthers 
9. ANANTHERIX, 
ase. 10. ASCLEPIODORA. 
Hoods of the crow M con cace: m at the apex: 
anthers saglitate at the bas 11. ASCLEPIODELLA. 
(Ae ty ie oe 
Mea 
