3G8 HABENARIA, HELIOTROPIUM. 
18—1. HABENARIA. 7. 21. 
phyco'des, (O. g-w. Ju. %.) lip 3-parted ; segments finely divided; petals ob- 
tuse ; horn filiform-clavate, ascending, longer than the germ. 
viridoflo'rum. (g. and p. Au. 7|_.) stem erect, branched, scabrous ; leaves ter- 
nate, ovate, obtuse, scabrous above, villous and very soft beneath ; panicle 
terminal, very long, naked : joints of the lowest triangular. 3 f. jS. 
rotundifolium, (O. p. Au. 7J-.) stem prostrate, hairy; leaves ternate, suborbi- 
cular, hairy ; stipules cordate, reflexed ; racemes axillary, paniculate ; joints 
of the loment sub-rhomboidal. 2 — 3 f. S. 
acumina'tum, (O. p. Ju. 7J..) erect, simple, pubescent: leaves ternate, ovate, 
conspicuously acuminate, a little hairy ; panicle terminal, on a very long 
naked peduncle; joints of the loment roundish. 1 — 2 f. S. 
21—4. HALUMENIA. 57. 2. 
palma'ta, frond flat, sub-palmate ; divisions oblong, sub-simple ; colour red- 
dish-purple ; substance at first thin and membranaceous, at length passing 
into a soft leathery substance. In the sea. 
4— 2. HAMAMELIS. 54. 78. 
virgin" ica, (witch hazle. O. y. Oc. T 7 -) leaves, obovate acute, toothed, cordate, 
with a small sinus. Var. parvifolia, leaves oblong-ovate, upper part undu- 
late-coarse-crenate, pubescent and somewhat hirsute beneath ; divisions of 
the calyx oblong ; flowers in the fall, and perfects the fruit the next sum- 
mer. 5 — 15 f. S. 
13—1. HEDEOMA. 42. 39. 
pulegio'ides, (penny-royal. O. b. J. 0.) pubescent; leaves oblong, serrate; 
peduncles axillary, whorled. 6 — 8 i. S. 
5—1. HEDERA. 4G. 58. 
helix, (english ivy. g-w. S. Ij .) leaves 3 or 5-lobed ; floral ones ovate ; umbel 
1G— 10. HEDYSARUM. 32. 93. 
canaden"se, (bush trefoil. O. r. Ju. 7)..) erect, smoothish ; leaves ternate, lance- 
oblong; stipules filiform; flowers racemed ; bracts lance-ovate, acuminate, 
ciliate; joints of the loment obtusely triangled, hispid. 3 f. S. 
17—2. HELENIUM. 49. 55. 
autumna'le, (false sunflower. O. y. Au. 7J..) leaves lanceolate, serrate, subde- 
currcnt : stem corymbed above : disk florets 5-cleft : rays flat, reflexed. 
Var. pubescens , leaves pubescent. 3 — 5 f. S. 
17—3. HELIANTHUS. 49. 55. 
1. Leaves opposite. 
trachclifo'lius, (y. Au. 7|.) leaves ovate-lanceolate, acuminate, serrate, triply- 
nerved, very scabrous on both sides ; scales of the calyx lance-linear, cili- 
ate ; outer ones longest. 3 — 4 f. iS, 
2. Upper leaves alternate. 
Exotic. 
tubero'sus , (jerusalem artichoke, y. S, 7J.;). leaves 3-nerved, scabrous ; lower ones 
heart-ovate, upper ones ovate, acuminate: petioles ciliate. Root tuberous. 
Naturalized. 4 — 8 i. 
an"nuus, (common sunflower, y. & w, Ju. 7|_.) leaves all cordate, 3-nerved ; 
peduncles thickening upwards ; flowers nodding. C — 10 f. 
17—2. HELIOPS1S. 49. 55. 
losvis, (ox-eye. O. Ju. 7J..) stem glabrous; leaves opposite, ovate, serrate, 3- 
nerved, smooth. 3 — 5 f. S. 
5— 1. HELIOTROPIUM, 41. 42. 
Southern. 
in"dicum, (turnsole. E, b. Ju. 0.) leaves heart-ovate, acute, roughish ; spikes 
solitary ; fruit bifid. 8 — 12 i. 
