74 GENTIANACEH. (GENTIAN FAMILY.) 
over the truncate summit of the stigma, their wing-like edges meeting and projecting 
between the hoods; pollen in 10 wax-like masses. Follicles ovate or lanceolate. Seeds 
numerous, flat, downwardly imbricated all over the large, soon detached placenta; the 
upper end with a long tuft of down (coma).—Hoods in our species erect and not exceed- 
ing the stamens and stigma. 
1. A, fascicularis, Decaisne. Smooth, slender, 1 to 5 ft. high; leaves in whorls of 
3 to 5, or some in pairs, linear and linear-lanceolate; flowers white or whitish; horns 
longer than the hoods. 
2. A. vestita, Hook & Arn. White-woolly; leaves opposite, ovate-lanceolate or 
oblong-lanceolate, almost sessile; umbels almost sessile; flowers about half an inch long, 
the hoods flesh-colored. 
2, GOMPHOCARPUS, R. Br 
No horn to the hood of the stamens; otherwise as Asclepias, 
§1. Hoods saccate, pointless, lower than the anthers, opening down the back, asif 2-valved. 
1. G. tomentosus, Gr. White-tomentose, closely resembling Asclepias vistitia ; 
stem acutely angled; leaves ovate or oblong (about 4 inches long); corolla greenish-white 
or purplish. 
_ 2 G. purpurascens, Gr. Canescently puberulent; stems 4 to 12 inches high; 
leaves ovate and somewhat cordate, an inch or two long; flowers small; the corolla red- 
purple; the hoods white. 
§2. Hoods erect, open down the front, somewhat surpassing the anthers. 
3. G. cordifolius, Benth. Green and smooth, 2 or 3 ft. high; leaves ovate or ovate- 
lanceolate, with cordate clasping base, opposite, rarely in threes, 2 to 5 inches long;. 
flowers large; corolla dark red-purple; the hoods purplish. 
Oxpver 37. GENTIANACEA. 
Glabrous herbs, with colorless, bitter juice, entire opposite and sessile leaves, no sti-. 
pules, perfect and regular flowers, stamens as many as the lobes of the corolla and alternate. 
with them, inserted on the tube, the anthers free from the stigma; ovary 1-celled; style 
one or none; the stigmas commonly two. Calyx persistent. 
§1. Corolla withering-persistent. Leaves opposite or whorled, entire, sessile. 
Corolla salver-form, red; calyx 5-parted...........ceseeeesseeees eee ..rythrea. 1 
Corolla short, salver-form, yellow; caylx 4-toothed..............-. e008 Microcala. 2 
Corolla: funnel-form, blue. esc sos ceva Seeeene sees candcas aucieres Gentiana, 3. 
§ 2. Corolla deciduous. Leaves alternate, with sheathing petioles. 
Flowers borne on a naked scape.........e08 aeieietee whdiaie eyaiia sym arciarerecsin Menyanthes, 4 
