288 MILKWEED FAMILY. 



* * Flowers pink or light rose-purple ; leaves all opposite ; pods naked. 

 A. incarnata, Linn. Wet grounds ; very leafy, branching stems, 

 lanceolate or lance-oblong acute leaves, often slightly heart-shaped at the 

 base ; smooth or smoothish, or in var. ptilchra, pubescent and the leaves 

 very short-petioled. 



* * * Flowers dull purplish, greenish, or white. 



->- Stems branching, almost woody at base; leaves all opposite,' pods 



naked. 



A. per^nnis, Walt. Nearly smooth ; leaves lanceolate or lance-ovate, 

 slender-petioled ; flowers small, white; seeds mostly without a tuft. 

 S. Ind. and S. 



<- *- Stems simple ; leaves all opposite and closely sessile or clasping by a 

 heart-shaped base, the apex rounded or notched; plants smooth, pale or 

 glaucous ; pods naked. 



A. obtusif61ia, Michx. 2-3 high, the rather remote, broadly oblong 

 leaves wavy ; umbel mostly solitary, long-peduncled ; flowers pretty 

 large, greenish-purplish. Sandy soils. 



A. amplexicaulis, Michx. Dry barrens N. Car., S. ; stems reclining, 

 l-2 high, very leafy ; leaves ovate-heart-shaped ; umbels several, short- 

 peduncled ; corolla ash-colored, the hoods white. 



t- - H- Stems simple or nearly so, leafy to the top ; leaves all opposite, 

 ovate, oval, or oblong , pretty large, short-pet* jled ; umbels lateral and 

 terminal ; flowers ' long or nearly so. 



M- Pods beset with soft prickle-shaped or warty projections. 



A. Corniiti, Decaisne. COMMON MILKWEED of fields and low grounds 

 N. ; downy, or the large pale leaves soon smooth above; flowers dull 

 greenish-purplish. 



*-*. -M. Pods even, but usually minutely downy. 



A. phytolaccoldes, Pursh. POKE MILKWEED. Moist grounds N. and 

 W., S. to Ga.; smooth or smoothish, 3-5 high ; leaves large, pointed or 

 acute at both ends ; umbels loose, the long pedicels (l'-3') equaling the 

 peduncle ; corolla greenish, but the more conspicuous hoods white. 



A. purpurascens, Linn. l-3 high , leaves downy beneath, smooth 

 above, the upper taper-pointed ; pedicels of the rather loose umbel shorter 

 than the peduncle ; corolla dark dull purple. Dry ground, N. Eng. W. 

 and S. 



A. variegata, Linn. l-2 high, nearly smooth ; leaves oval or obo- 

 vate, slightly wavy ; peduncle and crowded pedicels short and downy j 

 corolla white, the hoods purplish. Dry woods, N. Y., W. and S. 



*----.- Stems simple or rarely branched, slender ; most of the leaves 

 in whorls; pods slender and naked; flowers small, white or whitish. 



A. quadrifdlia, Linn. Stems l-2 high, nearly smooth, naked below, 

 bearing about the middle one or two whorls of 4 ovate or lance-ovate 

 taper-pointed petioled leaves, and beneath or above them usually a pair 

 of smaller ones ; pedicels slender ; corolla mostly tinged with pink, the 

 hoods white. Woods and hills, N. Eng., W. and S. 



A. verticillata, Linn. Dry ground ; l-2 high, smoothish ; stems 

 very leafy throughout ; leaves very narrow, linear or thread-shaped, in 

 whorls of 3-6 ; flowers greenish-white. 



2. ASCLEPIODORA. (Name made from Asclepias.) 2 



A. vlridis, Gray. Smoothish, 1 high ; leaves alternate, oblong 01 

 lance-oblong ; flowers 1' broad, green, the hoods purplish, in loose ter- 



