140 THE DICTIONARY 
OF GARDENING, 
_ Heterotoma—continued. 
H. lobelioides (Lobelia-like).* Bird Plant. fl. — and yellow, 
racemose; corolla very curious, somewhat tubular, with a taper- 
ing base. l. broadly ovate, with distant teeth. Stem becoming 
woody at the base. Mexico, 1861. (F. d. S. 1454.) 
HETEROTRICHUM. A synonym of Saussurea 
(which see). 
HETEROTROPA (from heteros, various, and trope, 
a change; in allusion to the variable nature of the 
plants). ORD. Aristolochiacee. A small genus of green- 
house or half-hardy perennial herbs, with creeping roots, 
natives of Japan; now included, by Bentham and Hooker, 
under Asarum., Flowers terminal, solitary, shortly pe- 
dunculate ; perianth dusky-purple or lurid; lobes acute or 
ecaudate-acuminate. Leaves long, petiolate, cordate-reni- 
form or almost hastate. For culture, &c., see Asarum., 
asaroides (Asarum-like). f, inclined or drooping, on very 
short peduncles; perianth dull purplish-green, depresso-globose, 
contracted at base and mouth; limb of three triangular blunt 
ents, spreading horizontally; internal surface deeply 
cellular. April and May. J. petiolate, deeply cordate, nearly 
ovate, entire,-spotted; petioles erect, as long as the leaves. 
hizome branched and nodose. h. 6in. 1836, Plant glabrous. 
Greenhouse. SYN. Asarum japonicum. (B. M. 4933.) 
H. parviflora (small-fiowered). f. purple and green, solitary, 
bracteated, about half the size of those of H., asaroides ; perianth 
urceolate ; tube constricted above the middle, oval-ventricose 
below ; segments of limb broadly ovate ; bracts longer than the 
flowers. April. Z. solitary, cordate, white-spotted, with a deep, 
narrow sinus. h. 3in. 1862. Greenhouse. (B. M. 5380.) ~ 
HEUCHERA (named after Johann Heinrich Heucher, 
1677-1747, Professor of Medicine at Wittenburg). Alum 
Root. Onn. Sawvifragee. This genus comprises about 
twenty species of elegant hardy perennial herbs, natives 
of temperate North America, from Mexico almost to the 
Arctic regions. Flowers rather small, spicate, racemose 
or paniculate, bracteate, glabrous or pubescent. Leaves 
radical, long-petiolate, broadly cordate or orbiculate, 
lobed or crenate, All the species are of easy culture 
in any ordinary garden soil, except stiff clay, and may 
be readily increased by dividing the crowns during spring. 
Most of the Heucheras have inconspicuous flowers, but 
= H. sanguinea is one“of the handsomest of recently-in- 
troduced herbaceous pints. All are worth growing on 
account of their foliage? but a couple of species will be 
suffidiently representative of the general character of 
the genus, 
H. americana (American).* f, reddish; thyrse elongated, 
— Summer. /. on long petioles, somewhat five to seven- - 
bed, toothed. k. 14ft. North America, 1656. Plant clothed 
with clammy pubescence. i 
H. caulescens (caulescent). A synonym of H. villosa. 
H. cylindrica (cylindrical), ^. greenish, rather large; panicle 
compact, cylindrical. Summer. jesa deeply and Aundi. 
crenated, ciliated, truncate at the base. h. lft. to l4ft. 
Oregon, &c., 1830. (B. R. 1924.) 
Ñ 
Heuchera—continued. 
H. hispida (hispid).* A. veined with purple, more or less oblique ; 
stamens soon te longer than the oe petals ; 
— very narrow; scapes 2ft. to 4ft. high. May to July. 
. rounded, slightly five to nine- lobed. High mountains of 
Virginia and Carolina, 1826. Plant hispid or hirsute, with long 
spreading hairs (occasionally almost glabrous), scarcely glan- 
dular. SYN. H. Richardsonit. 
H. Menziesii (Menzies’). A synonym of Tolmied Menziesii. 
H. micrantha (small-flowered). fl. yellowish; panicle loose. 
Summer. 7. roundish -cordate, nearly naked, bluntly lobed, 
crenate; teeth horned. k. 2ft. North-west America, 1827. 
(B. R. 1302.) 3 
H. pubescens (downy). f. pale red, variegated with yellow, 
large; branches of panicle short, crowded with flowers. Summer. 
l. somewhat acutely lobed, toothed; teeth mucronate. h. lft, 
United States, 1812. Plant covered with powdery down. SYNS. 
H. pulverulenta, H. ribifolia, 
H. pulverulenta (powdery). A synonym of H. pubescens. 
H. ribifolia (Currant-leaved). A synonym of H. pubescens. 
H. Richardsonii (Richardson’s). A synonym of H. hispida. 
ea (blood-coloured).* fl. deep red, paniculate, some- 
what campanulate. Summer. /. cordate, orbiculate, five to 
- seven-lobed ; lobes dentate, ciliate ; petioles clothed with spread- 
ing hairs. A. 9in. to 18in. Northern Mexico, 1882, (Gn. xxvi. 
H. villosa (villous). M. violet, small, loosely panicled ; petals 
spathulate-linear, about as long as the stamens, soon twisted ; 
scapes lft. to 3ft. high, villous, with rusty hairs (as are also the 
tioles and veins of the leaves beneath). August and September. 
. acutely seven to nine-lobed. United States and Canada, 1812. 
Syn, H. caulescens. 
HEVEA (from Hevé, a vernacular name in Northern 
South America). Syns. Micrandra, Siphonia. Orp. Eu- 
phorbiacee. “A genus comprising nine species of tall 
stove trees, natives. of the damp forests of tropical 
America. Flowers in dichotomous cymes. Leaves alter- 
nate, on long petioles, digitately five-foliolate; leaflets 
petiolulate, entire. Of the two or three species yet in- | 
troduced, the best-known is the one here described. It 
succeeds in a sandy loam. Propagated by cuttings, 
made of half-ripened wood, and inserted iÅ sand, under 
a hand glass, in heat. 
H. braziliensis (Brazilian). /. green, white. May. l. light green, 
digitately trifoliolate. h, sort: Tropical South America’ 1823 
This plant furnishes the well-known Para rubber of commerce. 
HEWARDIA. Now included under Adiantum. 
HEXACENTRIS. This genus is now included, by 
the authors of the “Genera Plantarum,’ under Thun- 
bergia (which see). 
HEXAGLOTTIS (from her, six, and glotta, a tongue; 
in reference to the six spreading lobes of the style). 
ORD. Iridew. A genus of two or three species of pretty 
greenhouse bulbous plants, from South Africa, rarely seen 
in cultivation. For culture, see Ixia. 
H. longifolia (long-leaved). f. yellow; segments nearly equal, 
oblong, spreading ; tilaments united in a cylinder. May. he Att. 
1766, SyNs. Homeria and Morea flexuosa. (B. M. 695, under 
name of Morea flexuosa.) 
H. virgata (twiggy). fl. yellow. May. h. 2ft. 1825. 
HEXAGONAL. Six-sided. 
HIBBERTIA (named after George Hibbert, a distin- 
guished patron of botany, who died in 1838). Including 
Cyclandra, Hemistemma, and Pleurandra. Orv. Dil- 
leniacee, A genus of about seventy species of stove 
or greenhouse shrubs or under-shrubs, of which two are 
from Madagascar, three or four from New Caledonia, and 
the rest from Australia. Flowers yellow or white, solitary 
and terminal, or apparently axillary, sessile, in a tuft of 
floral leaves, or pedunculate. Leaves entire, or rarely 
largely or remotely dentate, often Heath-like, one-nerved 
or obscurely reticulate, penniveined. Hibbertias grow 
freely in peat or loam, either together or separate ; 
a sufficient quantity of sand must, however, at all times 
be added, to maintain the soil in a healthy, porous con- 
dition. The pruning of weak and straggling shoots will 
need attention, If insects appear, they must be eradi- 
cated at once, or they will soon cause the plants to 
become both unhealthy and unsightly. Propagation may 
