166. 
ASCLEPTADACEAE 
Asclepias 
1. Corolla red to purple; hoods (5 in a crown on tube 
of stamens) orange or purple. 
2. Tidal stream habitat; umbels several, forming 
a corymb. (Also, leaves tapering to tip; stems 
and lower leaf surfaces glabrous or nearly SO)..eeo Ae incarnata 
2. Moist to dry forest habitat; umbels 1 or few, 
scattered. Expected (A. tuberosa, A. rubra). 
1. Corolla and hoods greenish, yellowish, white, or 
tinged purple. 
3. Leaves narrowly linear, with revolute margins. 
Expected (A. verticillata). 
3. Leaves lanceolate to oblong or obovate. 
4, Leaves membranaceous, long-attenuate. 
Expected (A. quadrifolia). 
4. Leaves firm, thicker, blunt-tipped. 
5. Leaves sessile and clasping at base. 
Expected (A. amplexicaulis). 
5. Leaves short-petioled, not clasping. 
6. Leaves glabrous, tapering to petioles; 
flowers 8-12 mm. long, white with purple 
center. Expected (A. variegata). 
6. Leaves minutely tomentose below, rounded 
at base; flowers 12-25 mm. long, hoods 
greenish to whitish or purplish........... A. syriaca 
Asclepias incarnata L., var. 
pulchra (Ehrh.) Pers. Swamp Milkweed 
Java Farm. Infrequent along tidal portion of Muddy Creek. 
Associate species: Typha latifolia, Smilax rotundifolia, Aster subulatus, 
Scirpus validus. Higman 268. 
