APOCYNACEAE 1057 
1. N. lacunosum (Vent.) Kuntze. T iim ovate or orbicular-ovate, 2—4.5 
em. long: flower-clusters usually with t eorola white: filaments adnate 
to above the middle of the pale tube p 
capsule 
out 4 m ong. ean  Griseb.] 
- Shallow paie. various provin 2 Fla. to 
La., Minn., Ont., and Me.—Spr.-fall. 
N. aquaticum (Walt.) Kuntze. , Leaf- 
blades suborbicular to reniform, 5-15 em 
A. Gray|—Ponds and ‘slow Pura e 
Plain. Fla. to Tex. and N. J.—Spr.- 
ORDER ASCLEPIADALES-—-ASCLEPIADAL ORDER 
Herbs, shrubs or trees, commonly with a milky juice. Leaves alternate 
or opposite: blades entire. Inflorescence eymose, sometimes umbellate. 
Calyx of usually 5, partially united, sepals. Corolla of usually 5 partially 
united petals. Androecium of 5 distinct or monadelphous stamens. Pollen 
granular, or in waxy masses. Gynoecium of usually 2 earpels sometimes 
only united at the apex. Stigma terminal. Fruit a pair of follicles, or 
drupaceous. 
Styles united: stamens distinct: pollen loosely granular. Fam. 1. APOCYNACEAE 
Styles distinct : stamens monadelphous: pollen united into 
axy masses. "am. 2. ASCLEPIADACEAE, 
Famity 1. APOCYNACEAE — Docpane FAMILY 
Perennial herbs, vines, shrubs or trees, mostly with a milky aerid 
juice. Leaf-blades simple. Androecium of 5 stamens with the eee 
nverging around the stigma or partly adhering to it. Filaments par- 
at 
tially adnate to the corolla-tube.  Pollen-grains simple Gynoecium of 2 
distinct carp or 2 un earpels. Styles united. Stigmas simple 
Fruit usually of 2 folhe es appendaged.—A bout 
Seed oft 
130 genera and 1,100 species, widely distributed but mostly tropical. 
Carpels distinct: fruit a pair of follicles or drupes, sometimes single by abortion. 
Anthers unappendaged 2 the base, not connected with the stigma: oo lobes 
sinistrorsely convolu I. VIN 
an appendaged ` the base, converging around the 
A and partially adherent to it: corolla-lobes dex- 
trorsely ane 
II. ECHITIDEAE. 
Carpels united: fruit a 1-celled capsule. 
III. ALLAMANDAE. 
I. VINCEAE 
Fruit drupaceous : shrubs or trees. 
Corolla salverform, PON ely small; lobes equilateral, 
shorter than the 
Co E lla funnelform, relatively large ; lobes inequilateral, 
nger than the tu 
Fruit "i pair of follicles: Hebe: sometimes H shrubby. 
Flower without a disk: leaves alternat 3. AMSONIA. 
Flower with a 2-lobed disk: leaves A 
67 
1. VALLESIA. 
2. CERBERA. 
