Bulletin University of New Mexico—No. 49 
Flowers orange-color, leaves mostly scattered, 
~.... A. TUBEROSA. 
Flowers, greenish or lurid-purplish, leaves opposite, 
whorled or the upper rarely scattered. 
Leaves narrow, lanceolate to linear, 
A. BRACHYSTEPHANA. 
Leaves large, orbicular to oblong lanceolate 
A. JAMESII. 
A. Ttusrrosa, LZ. (Butterfly weed.) Pleasant-root. 
Roughish-hairy; 1 to 2 ft. high; stems very leafy, 
branching at summit, and bearing usually numerous 
umbels in a terminal corymb; leaves from linear to | 
oblong-lanceolate, sessile or slightly petioled; hoods 
narrowly oblong, bright orange. Sandia Mts. 
A, BRACHYSTEPHANA, Hugelm. Stems 6to 10 inches 
high, very leafy, cinereously-puberulent or tomentose 
when young, the inflorescence more floccose; leaves 
1 to 3 in. long, much surpassing the 4 te 8 flowered um- 
bels. Mesa, common in spring. 
A. gAMEsSU, Torr. Glabrous or minutely pubescent 
when young; stem stout, 1 ft. or more high; about 5 
pairs of leaves, very thick, rounded or broadly oval, 
subcordate at base, nearly sessile; umbels 2 or 3, dense- 
ly many flowered. At the base of the Sandia Mts., 
and extending for some distance out on to the mesa. 
20. APOCYNACEAE. Dogsane Famity. 
Plants almost all with milky acrid juice, entire, 
chiefly opposite leaves, without stipules; the corolla- 
lobes convolute and twisted in the bud. Styles and 
stigmas united into one. 
apocynuM, Tourn. Dogbane. 
Perennials herbs, with upright branching stems, 
tough fibrous bark. opposite mucronate pointed leaves, 
small and pale cymose flowers on short pedicels, 5- 
parted calyx with acute lobes, bell-shaped, 5-cleft co- 
rolla, be aring 5 triangular appendages below the 
throat opposite the lobes, 5 stamens on the very base of 
the corolla, flat filaments shorter than the sagitate an- 
thers, no style, large ovoid stigmas, seeds as in the 
milkweed (Asclepias. ) 
A. CANNABINUM, LZ. (Indian Hemp.) Cymes close 
and many-flowered and usually shorter than the 
leaves, which are from oval to lanceolate, short petioled 
or sessile with rounded base; corolla greenish-white 
with nearly erect lobes. A good sized patch just west 
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