422 
HELICONIA 
Heliconia Linn. Musaceae. 30 sp. trop. Am. Firs, in cincinni. The 
odd sepal is posterior. 
Helicteres Pluk. ex Linn. Sterculiaceae. 40 sp. trop. (exc. Afr.). The 
firs, become zygomorphic if they happen to be in a horizontal position. 
Heliophila Burm. f. ex Linn. Cruciferae (1. 3). 60 sp. S. Afr. 
Heliopsis Pers. Compositae (v). 7 sp. Am. 
Heliotropium (Tourn.) Linn. Boraginaceae (ill). 220 sp. trop. temp. 
H . peruvianum L. (cherry pie) and other sp. of heliotrope are culti- 
vated for their scented firs. 
Helipterum DC. Compositae (iv). 48 sp. Austr., S. Afr. Xerophytes 
with persistent involucre of white scaly bracts; the dried flower-heads 
are sold as ‘everlastings’ (cf. Helichrysum, &c.). 
Helleborus (Tourn.) Linn. Ranunculaceae (2). 45 sp. Eur. ; 2 in Brit, 
(hellebore). The plants are woody below, each shoot from the 
stock taking several years to reach maturity and flower. Fir. proto- 
gynous, opening very early in the year. Cpls. slightly coherent at 
base. In H. niger L., the Christmas rose, the perianth turns green 
after the fir. has been fertilised. 
Helminthia Juss. = Picris Linn. 
Helminthostachys Kaulf. Ophioglossaceae. 1 sp. H. zeylanica 
Hk. f., Ceylon, Himal. to Queensland. Rhizome dorsiventral with 
2-ranked leaves on the upper side, and roots below. The roots do 
not bear any definite relation to the leaves. Sporangia peltate, on 
sporangiophores from the sides of the fertile spike. [Cf. Farmer and 
Freeman, in Atm. of Bot. xm. 1899, p. 421; Lang on prothallus, 
do. xvi. 1902, p. 23.] 
Helobieae. The 2nd cohort of Monocotyledons (1st of Warming). 
Helonias Linn. Liliaceae (1). 1 sp. east N. Am. 
Helosciadium Koch = Apium Tourn. 
Helosis Rich. Balanophoraceae. 3 sp. trop. Am. 
Hemerocallis Linn. Liliaceae (in). 5 sp. temp. Eur., As. Infl. a 
double bostryx. The firs, of H. fulva L. are self-sterile. 
Hemicyclia Wight et Arn. Euphorbiaceae (a, II. 10). 10 sp. Indo-mal. 
Hemidesmus R. Br. Asclepiadaceae (1. 1). 1 sp. India. 
Hemigenia R. Br. Labiatae (11). 25 sp. Austr. 
Hemionitis Linn. Polypodiaceae. 8 sp. trop. 
Hemitelia Br. Cyatheaceae. About 20 sp. trop. and S. temp. Tree- 
ferns. 
Hemizonia DC. Compositae (v). 25 sp. west N. Am. 
Hepatica Dill. = Anemone Linn. 
Heptapleurum Gaertn. Araliaceae. About 50 sp. trop. Afr., As., 
Austr. Included in Schefflera in Nat. PJi. 
Heracleum Linn. Umbelliferae (7). 70 sp. N. temp., and trop. Mts. 
(H. Sphondylium L., cow-parsnip, in Brit.). 
Herbertia Sweet ( Alophia Herb.). Iridaceae (11). 3 sp. trop. and 
sub-trop. Am. 
