360 
COHMELINA, CONVOLVULUS. 
3—1. COMMELINA. 6. 13. 
angustifo'lia (day-flower. E. b. Ju. 7)..) assurgent, weak, somewhat gla- 
brous: leaves lance-linear, very acute, flat, glabrous: sheathes sub- 
ciliate : bracts (or involucra) peduncled, solitary, short-cordate. 12 i. S'. 
19—3. COMPTON1A. 50. 99. 
asplenifo'lia , (sweet fern. O. g. Ap. 1?.) leaves long-linear, alternately 
crenate-pinnatifid. 18 — 48 i. S. 
21—4. CONFERVA. 57. 2. 
ru/a, threads. ramose, capillary, straight, obsoletely geniculate; branches 
and branchlets opposite, remotish ; length of the joints equalling the 
diameter. In the sea. Reddish yellow, shining, in fascicles ; threads 
of the thickness of human hair, 2 inches and longer, flaccid, soft. 
5— *2. COK1UM. 45. 60. 
macula' turn, (poison hemlock. O. w. Ju. 7)..) stem very branching, spotted; 
leaves very compound; seed striate. Yar. crispatulum, leaves crisped; 
ultimate divisions acuminate, or terminated in a bristle. 2 — 4 f. 
6—1. CONVALLARIA. 11. 12. 
1. Corol deeply 4-parted , spreading .- stamens 4 : berry 2 celled. (Flowers 
in a terminal raceme.) 
bifoiia. (6. w. M. J. 7J..) stem 2-leaved ; leaves or short petioles cordate- 
oblong, very smooth on both sides ; racemes simple, terminal ; flowers 
tetrandrous. 4 — 6 i. 
2. Corolla 6-parted, spreading : filaments divergent , attached to the base of 
the segments. (Flowers in a terminal raceme.) 
stella'ta , (O. w. M. 7J..) stem with alternate, clasping, oval-lanceolate 
leaves ; raceme simple, terminal. 8 — 18 i. 
trifo'lia , (O. w. J. 7(.) stem about 3-leaved ; leaves alternate, ovate-lance- 
olate, contracted at the base ; raceme simple, terminal, lew-flowered. 
6—10 i. 
racemo sa , (spiked solomon see. O. y-w. M. 7|_.) stem with alternate leaves; 
sessile, oblong-oval, acuminate, nerved, pubescent ; flowers in a 
terminal raceme-panicle. 18 — 24 i. 
Southern. 
majalis , (lily of the valley. A. w. J. Tj..) scape naked, smooth; leaves 
oval-ovate. 
5—1. CONVOLVULUS. 29. 43. 
re pens (field bind-weed. O. w. it r. J. 7J..) twining; leaves sagittate, with 
the apex acute and the lobes truncate, entire, (some obtuse ;) bracts 
acute, longer than the calyx, and shorter than the middle of the corol- 
la ; peduncle angled, exceeding the petiole. S. 
panduratus , (meclioacan. w. fc r. Ju. TJ..) twining, pubescent: leaves 
broad-cordate, entire or lobed, guitar-form: peduncles long; flowers 
fascicled; calyx glabrous, awnless; corolla tubular-bell-form. Resem- 
bles rhubarb in its effects. 
Exotic. 
bata'tus. (sweet potato, Carolina potato, w-r. Ju. 7)..) creeping, tuberous; 
leaves cordate, hastate, angular-lobed, 5-nerved, smoothish; pedun- 
cles long ; flowers fascicled ; corolla sub-campanulate. Cultivated. 
purpu'reus , (common morning glory, b. p. J. G.) pubescent; leaves cor- 
