Half 
hederaceous 
portions ; (2) sometimes it means 
one-sided,dimidiate; ~anat’ropous, 
amphitropous; ~ Breed, the pro- 
duct of a cross-fertilization; ~ 
cordate, heart-shaped on one side, 
~ cylin‘dric, applied to a stem 
flattened on one side; ~ equ 'itant, 
partially equitant ; ~infe’rior, used 
of an ovary when the stamens are 
perigynous ; ~ monopet’alous, the 
petals united, but so slightly as to 
separate easily ; ~ moon-shaped, 
semilunate, crescent-like ; ~ net’ted, 
when of several layers, only the 
outer is netted, as the corm of 
Gladiolus communis, Linn. ; ~ stem- 
clasp'ing, partly amplexicaul; ~ 
supe’rior, the same as half-inferior ; 
~ terete’, flat on one side, terete on 
the other :—Half-Galtonian-curve, 
see NEWTONIAN CURVE. 
Halm, see Havutm. 
halona’tus (dws, the disk of the 
sun, halo), when a coloured circle 
surrounds a spot. 
haloph’ilous (ds, adds, salt, the sea, 
gpréw, I love), salt-loving ; Hal’o- 
phyte (gurdv, a plant), a plant 
which grows within the influence 
of salt water; adj. halophyt‘ic. 
Hal’ospore, an error for HAPLOSPORE. 
halved, dimidiate. 
ha’mate, hama’‘tus (Lat., hooked), 
hooked at the tip; ha’mose, 
ha’mous, hamo’sus, hooked ; ham’u- 
late, hamula’tus ; ham’ulose, 
hamulo’sus, beset with small hooks ; 
Ha‘mulus, a hooked bristle in the 
flowers of Uncinia; Ha'mus, a 
hook. 
Han’dle, the manubrium of the anthe- 
ridium of Characeae. 
hapaxan’'thic, hapaxan’thous (d7aé, 
once, avOos, a flower), used of herbs 
having a single flowering period. 
haplochlamyd’eous (dddos, single, 
xAapvs, a mantle), monochlamy- 
deous, having a single perianth ; 
haplogen’eus (yevydw, I bring forth), 
= heteronemeus; Haplogonid’ium 
(+ Gonipi1um), a Lichen gonidium 
resembling Protococcus ; haploper- 
ist‘omous (+ Prristoms), used of 
Mosses with a peristome of a single 
row of teeth; haplopet’alous, -/us 
(réradov, a flower leaf), with one 
row of petals ; Hap’lospore (a7opa, 
seed), a simple spore in Lichens ; 
haploste’monous(cr7juwv, astamen), 
with a single series of stamens 
in one whorl. 
Hap’teron, pl. Hap’tera (dr7w, I fasten 
upon), Warming’s term for organs 
of attachment which do not contain 
vascular tissue, as in Podosto- 
maceae. 
Haptot’ropism (dm7opa, to attach 
oneself to), curvature induced in 
climbing plants by the stimulus of 
a rough surface (Czapek). 
hard’y, enduring without protection ; 
not injured by the climate. 
has’tate, hasta‘tus (hasta, a spear), 
halbert-shaped, sagittate, with 
the basal lobes turned outward ; 
has’tiform (forma, shape), spear- 
shaped, hastate; has’tile, has- 
tv'lis (Lat., like the shaft of a 
spear), used for hastate. 
hatch’et-shaped, dolabriform. 
Haulm, Halm, Haum, (1) the culm of 
grasses ; (2) the stem of herbaceous 
plants. 
Haustor’ium (haustor, a drawer), a 
sucker of parasitic plants ; used by 
Komarow for an appendage of peri- 
thecia. 
Haut’schicht (Ger.), the layer of cell 
protoplasm known as EcroPLasm. 
Head (1) an inflorescence; the 
capitulum of Composites ; (2) for- 
merly used for the theca of Mosses; 
~ Cell, the capitulum of Chara; 
head’ed, capitate. 
Heart, used by Grew for the centre, 
as heart of oak, the duramen; ~ 
shaped, cordate; ~ Wood, the 
duramen. 
hebecar’pus (18, puberty, xaprds, 
fruit), having the fruit covered 
with downy pubescence. 
heb’etate, hebeta’tus (Lat., blunted), 
having a dull or blunt or soft 
point. 
hedera’ceous, hedera’ceus (Hedera, 
ivy, + aceous, (1) pertaining to 
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