220 
OF GARDENING, 
THE DICTIONARY 
Wulfenia— continued. 
upper one emarginate or bifid, the lower one entire or 
— erenate; stamens two; peduncles scape-like, simple, with 
a few alternate scales. Leaves sub-radical, petiolate, 
crenate. The two introduced species are well adapted 
for the rockery, or for ornamenting well-drained but moist 
fower borders, being very showy when in blossom. Any 
light, rich soil is suitable; the protection of a frame in 
winter is desirable, as the plants are liable to rot if 
left in the open air at that season. Propagation may 
be effected by divisions, or by seeds. 
W. Amherstiana (Amherst's). fl. horizontal; corolla jin. long, 
with lanceolate, acute lobes; pedicels shorter than the caly3 
racemes long, slender, very many-flowered ; scapes Sin. to 1 
long, slender. July. 7. obovate-oblong or obovate-spathulate, 
Zin. to Sin. long, coarsely crenate or lobulate, narrowed at base 
and sub-pinnatitid ; petioles Jin, to ljin. long. Himalayas, 1846. 
. carinthiaca (Carinthian).* /., corolla tube lin. long, the 
limb shorter, the upper segments bifid, the lower sub-crenate ; 
pedicels much shorter than the calyx; raceme dense, spike-like, 
at length elongated ` scape lft. to 2ft. long, scaly below. July. 
l. oblong or oboval-oblong, doubly-crenate, slightly lobed, 
narrowed at ; radical ones few, Am. to 8in. long. Carinthian 
Alps, 1817. (B. M. 2500; S. B. F. G. 66.) 
, 
WULFFIA (named in honour of John C. Wulff, who 
died in 1767, author of “Flora Borussioa"). Syns. 
Chakiatella, Chylodia, Tilesia. ORD. Composite. A 
small genus (eight species have been described, but all 
are not distinct as such) of tropical American, stove, 
scabrous-pubescent, perennial herbs. Flower-heads yellow, 
at first depressed, at length globose, pedunculate, solitary 
or three to seven in a corymb; involucre hemispherical, 
with two or three series of bracts; receptacle slightly 
convex, the pales enveloping the florets; ray florets, when 
present, entire or minutely toothed; achenes glabrous or 
slightly pilose. Leaves opposite, petiolate, crenate- 
serrated. W. maculata, the only species introduced, is 
of easy culture in any light soil. Propagation may be 
effected by seeds, or by divisions. à 
TS S ted; - > 
about eight, Mean long à an bem rs P Boe 
terminal June. l. oblong-lanceolate, cuneate at base, acuminate 
at apex, serrated, scabrous above, nearly glabrous beneath. 
Stem tetragonal, spotted. À. 3ft. Brazi 
A en, id Brazil, 1822. Syn. 
. WULLSCHLJEGELIA (named after Herr Bischoff 
Wullschlegel, who collected W. aphylla in Jamaica). ORD. 
Orchidem. A small genus (two species) of stove, terres- 
trial, leafless Orchids, found in the West Indies and Brazil. 
Flowers very small, in loose, sub-sessile spikes; lip sessile 
at the base of the column, erect, concave, the base pro- 
duced in a pouch or spur. Stems simple, with a few 
small scales. The species are of no horticultural value. 
WURMBEA (named in honour of F. van W 
Secretary to the Academy of Sciences at Batavia). pc 
Liliacem. A genus consisting of seven species of green- 
house plants, with tunieated bulbs or eorms, natives of 
South Africa and Australia. Flowers ebracteate, sub. 
sessile, in a short, terminal, pedunculate Spike; perianth 
sub-campanulate or expanded nearly from the base. per- 
sistent, the lobes longer than the tube, sub-equal, 
spreading; stamens six. Leaves few, linear- or rarel 
ovate-lanceolate, continuous with the sheaths. P -— 
panulata and its varieties, the only planta calling for 
description here, are pretty subjects when in flower 
MY Ce in a compost of sandy peat and a little 
oam. ro] on i 
ee pagation may be easily effected by seeds, or 
w. lata (bell-shaped). $. perianth pallid. 4in. to 6; 
long, the tube s AM. to 6». 
WS imis Som she imisa fedis ut 
.; lower 
irea (A. B. R. 221; B M. 694) i: 
m 
y Baker, as a form of this species ; it lurid. is regarded, 
the segments eq) or enacting the cae dile perianth, 
Wurmbea—continiued. 
W. c. longiflora (long-flowered). /. perianth pale, jin. to ĝin. 
long, the M Lf; ripa or shorter than the cylindrical 
tube. 1788. A robust variety. W. pumila is a dwarf form of 
this, with three or four flowers in a spike, and linear leaves. 
W. pumila (dwarf), A form of W. campanulata longiflora. 
W. purpurea (purple). A form of W. campanulata. 
WURTHIA. A synonym of Ixia (which see). 
WYCH ELM. See Ulmus glabra and U. montana, 
WYETHIA (so called after N. B. Wyeth, the dis- 
coverer of this genus in the mountains of North America). 
Syn. Alarconia, Melarhiza. ORD. Composite. A genus 
of seven species of hardy, perennial, North American 
herbs, with a thick caudex. Flower-heads yellow, large, 
heterogamous, radiate ; involucre hemispherical, the bracts 
in two or three series, scarcely unequal; receptacle 
flat or slightly convex; ray florets ligulate, spreading; 
disk florets shortly five-cleft at apex; achenes glabrons. 
Leaves radical or alternate, entire. Stem often simple and 
one-headed. Only one species calls for mention here. For 
culture, see Helianthus. i ; 
W. angustifolia (narrow-leaved). fl.-heade yellow, solitary; 
scales of involucre mostly foliaceous, lanceolate or broader, 
equalling the disk ; involucre fully lin. high, loose or spreading ; 
rays numerous, ljin. long. Autumn. Z., radical ones stalked, 
elongated-lanceolate, tapering to both ends, occasionally dentate 
or serrate, often undulate ` cauline ones sessile, broader. A. 6in. 
to 2ft. United States. 
WYMOT. An old name for Marsh Mallow (Althea). 
SMA (from xanthisma, yellowness; alluding 
to the colour of the flowers). SYN. Centauridium. 
ORD. Composite. A monotypic genus. The species Is 
a hardy, annual or biennial herb. Seeds should be sown 
in the open border, during April. 
X. texanum (Texan). /.-heads wholly yellow, heterogamous, 
mediocre, solitary, at the tips of the branches ; involucre broadly 
campanulate, or at length sub-globose, the imbricated bracts 
in several series; receptacle flat, strongly fimbrilliferous; 
achenes glabrous; pappus reddish, shining. Summer. Í rai 
nate, linear-lanceolate, entire, pale, erect, sessile, about lin. 
long. A. lift. to 24ft. Texas, 1877. (B. M. 6275.) 
XANTHIUM (the old Greek name used by Dioscorides, 
from zanthos, yellow; the plants were formerly used by 
the Greeks for dyeing hair) Cockle Bur; Clot Bur. ORD. 
Composite. A genus consisting of about four species 
hardy, annual herbs, dispersed over warm and temi 
regions. Flower-heads solitary or glomerate at the axils, 
unisexual Leaves alternate, lobed or toothed. The 
species are of no horticultural value. X. spinosum 
(Bathurst Bur; Spiny Clot- Bur) and X. strumarwm 
(Ditch or Louse Bur; Small Burdock) are casual W 
in Britain.” 
XANTHOCEPHALUM (from vanthos, yellow, and 
cephale, a head; alluding to the yellow flower-heads). SYN 
Xanthocoma. Orv. Composite. A genus consisting of eight 
species of greenhouse or hardy herbs or sub-shrubs; on? 
is found in Ecuador, and the rest are Mexican. Flower | 
heads wholly yellow, rather large or mediocre, solitary ` 
or loosely eorymbose at the tips of the branches, hetero- 
gamous; involucre hemispherical or broadly campanulate, 
the imbricated bracts in several series; receptacle flat, ; 
foveolate; ray florets ligulate, spreading, nearly entire; | 
disk florets five-cleft at apex; achenes glabrous. Leaves 
alternate, narrow, entire or toothed. Only two specie? 
call for mention here. Both thrive in any fairly 
soil. X. centauroides may be increased by cuttings, al 
X. gymnospermoides by divisions, 
. centauroides (Centaurea-like).  /l-heads yellow, solitary 
involucre clammy ; outer scales ing. July te September. 
y scales spre: g od w rinkled, 
l sessile, thickish, linear, pinnatifidly Eng 
brous. A. ljft. Mexico, 182. Greenhouse sub-shrub. SYN- 
Grindelia coronopi*clia. 
