——————— eS 
1900 SUPPLEMENT—RECENT INTRODUCTIONS, &C. 239 
Chrysanthemum Leaf-Rust—continued. 
upon the soil. They will not germinate the same season, 
but they assuredly will do so in the ensuing spring, com- 
mencing again the cycle of life, unless the grower sprays 
his plants from the earliest times. 
There is absolutely no cure when once the Leaf-Rust 
fangus has asserted itself. It is, however, possible to stay 
its progress by spraying with sulphide of potassium (a 
common fungicide with rosarians and others), at the rate of 
loz. to 3galls. of water, used Inkewarm. This will destroy 
the spores before they can enter the foliage. Affected 
plants should also be isolated. As a precautionary 
measure, too, growers would be well advised to spray 
periodically—say, every eight or ten days—throughout the 
season. Still, notwithstanding the spraying, some of the 
spores will doubtless find a snitable resting-place. Where, 
therefore, the disease has been known to exist, very great 
care should be exercised by the gardener in collecting every 
leaf and stem from plants which have been infested, and 
‘instead of consigning them to the rubbish-heap they should 
be “burned, otherwise next season the chances are that a 
severer attack will be experienced. 
CHRYSANTHEMUM LEAF-SPOT. See Chry- 
santhemum. 
CHRYSEIS. A synonym of Eschscholtzia (which 
see). 
CHRYSIPHIALA. Included under Stenomesson 
(which see). C. latifolia, however, is a synonym of Urceo- 
lina latifolia. 
CHRYSOBAPHUS. A synonym of Ancctochilus 
(which see). 
ja ea acl Included under Ribes (which 
see). 
CHRYSOCEPHALUM. A synonym of Helichry- 
sum (which see). 
CHRYSOCOMA LINOSYRIS. See Aster Lino- 
syris. 
CHRYSOGLOSSUM (from chrysos, yellow, and 
glossum, a tongue; in allusion to the colour of the lip). 
Orp. Orchidex. A small genus (four or five species) of 
stove, terrestrial Orchids, with the habit of Tainia, natives 
of India and Malaya. Flowers mediocre, shortly pedicellate, 
disposed in a lax raceme ; pollen masses two, free. Pseudo- 
bulbs narrow or wanting, one-leaved. C. villoswm is in the 
Kew Collection. For culture, see Calanthe. 
C. villosum (villous). /. yellow, banded with purple, villous, 
fin. in diameter; lateral sepals decurved; petals curved 
upwards ; mid-lobe of lip panduriform ; scape (with raceme) lft. 
to 2ft. long. JZ. solitary, 6in. to 12in. long, broadly elliptic or 
- ovate, villous ; petiole lin. to 2in. long. Perak and Java. 
CHRYSOMELIDZE. See Phyllotreta. 
CHRYSOPA VULGARIS. See Lacewing Flies. 
CHRYSOPHYLLUM. Syns. Cainito, Nycteristion. 
This genus comprises about sixty species, mostly tropical 
American, a few being found in Africa, tropical Asia, 
Australia, and the Sandwich Islands. To those described 
on p. 325, Vol. I., the following should be added: 
Cc. imperiale (imperial). 1. yellowish-green, fascicled at the 
sides of a branch as thick as the finger, pedicellate ; corolla sub- 
rotate, five-lobed. April. fr. the size of a small Apple, obtusely 
five-angled. /. 3ft. long, 10in. broad, petiolate, obovate-oblong or 
oblong-oblanceolate, acute or obtuse, deeply serrated. Brazil. 
(B. M. 6823.) Syn. Theophrasta tmperialis (I. H. xxi. 184; 
R. G. 1864, 453). 
CHRYSORRHOE. Included onder Verticordia 
(which see). 
CHRYSOSTEMMA. MInelnded under Coreopsis 
(which see). 
CHRYSOTHAMNUS. A synonym of Bigelovia 
(which see). 
CHRYSOTHEMIS. A synonym of Tussacia (which 
see). 
CHRYSOXYLON. A synonym of Pogonopus 
(which see). 
CHTHAMALIA. 
(which see). 
CHUSQUEA (said to be the native name of some of 
the species in the West Indies). Syns. Dendragrostis, 
Rettbergia. Orp. Graminex. A genus embracing about 
thirty species of suffrnticose or arborescent, sometimes 
climbing, American Grasses. Flowers in terminal panicles ; 
spikelets one-flowered, variously paniculate. Leaves often 
rather small for the tribe (Bambusex), flat, articulated 
with the sheaths. C. abietifolia, the only species known to 
cultivation in this country, is an interesting and graceful, 
stove, climbing Bamboo. I¢ thrives in well-drained loam, 
and is propagated either by means of imported seeds or 
by division of the rootstock. 
A synonym of Lachnostoma 
C. abietifolia (Abies-leaved). /. in racemes, terminating the 
leafy branches; spikelets green and purple, {in. to Jin. long, 
December. 7. sin. to Zin. long, j;in. broad, strict, erect, sessile 
on the sheath, linear-lanceolate, acuminate. Stems wiry, smooth, 
terete. Jamaica, 1885. (B. M. 6811.) 
CHYLODIA. A synonym of Wulffia (which see). 
CHYSIS. The cultural requirements of these Orchids 
are a light position in the warm intermediate or Cattleya 
honse, and during the growing season an abundant supply of 
moisture, both at the roots and in the atmosphere. After 
growth has become matured less moisture and lighter and 
more airy conditions should prevail. Full exposure to the 
antumn sun in a vinery, where the leaves have fallen, suits 
them admirably. The pots used should be drained to two- 
thirds their depth with clean broken crocks, and the potting 
compost may consist of fibrous peat and sphagnum, with a 
liberal sprinkling of rough sand or broken crocks. The 
best season to pot is when the young growths commence to 
emit new roots from their base. 
The six or eight species referred to this genus are 
natives of Mexico and Colombia. To those described on 
pp. 326-7, Vol. I., the following should be added : 
Cc. aurea maculata (spotted). (l., sepals and petals tawny- 
yellow, zoned with purple, white at base ; side lobes of lip yellow, 
Stained brownish-purple at base, the middle lobe purple with pale 
markings. Venezuela, 1850. (B. M. 4576.) 
Cc. Bruennowiana (Bruennow’s). jl. of a pines hue, medium- 
sized. Peru, 1893. This closely resembles C. aurea in habit, but 
is regarded as a distinct species. Syn. C. Oweniana. 
Cc. Limminghei (Comte Alfred de Limminghe’s). /l. 2in. across ; 
sepals and petals white, with a purple blotch at apex ; side lobes 
of lip reddish-purple and yellow inside, pale buff-yellow outside, 
incurved towards the column, the middle lobe bright purple, 
streaked with yellow, emarginate ; column white above, yellow 
spotted with red opposite the lip. Tabasco, Mexico, 1857. This 
is now classed as a distinct species. (B. M. 5265, as a var. of 
aurea ; I. H. 1860, t. 240; W.S. O.i., t. 34.) 
C. Oweniana (Owen's). A synonym of C. Bruennowiana. 
C. undulata (wavy). 7. ten to twelve in a raceme ; sepals and 
petals of a lively orange-yellow ; lip cream-coloured, marked with 
numerous lines of pink. Pseudo-bulbs lft. high. Native 
country unknown. A rare but handsome species. 
The following are hybrids : 
chelsoniensis ...+e+.0-+ bractescens and levis (Veitch). 
langleyensis . - bractescens and Sedenii (Veitch). 
ISCO EVM aiateatsts(-\sicein alos Limminghei and bractescens (Veitch). 
CHYTROGLOSSA (from chytros, a well, and glossa, 
a tongue ; in allusion to the hollow at the base of the lip). 
Orv. Orchidex. A small genus (two species) of stove, 
epiphytal Orchids, with very short stems, natives of Brazil. 
Flowers mediocre, shortly pedicellate ; sepals and petals 
similar, free, spreading ; lip continuous with the base of the 
column, obscurely three-lobed, with one or two callosities at 
base ; column short ; raceme recurved or pendulous. Leaves 
sub-distichously fascicled, oblong-elliptic or linear, flat. 
These plants should be grown on blocks, in a hot, damp 
stove. 
C. aurata (golden). fl, sepals green and yellow, petals white, 
the base of the column and lip spotted with purple ; dorsal sepal 
and petals forming a kind of helmet over the column ; raceme 
glaucous, zigzag. J. few, lanceolate, acute, 2in. to 3in. long. 
1865. (J. H. S. ser. ii., vol. i, t. 3.) 
