en ae ee, ee ee ee, 
1900 SUPPLEMENT—RECENT INTRODUCTIONS, &C. 
433 
Hydrangea—continued. 
H. H. rosea (rosy).* jl. of a brilliant, deep rose-pink, large, in 
medium-sized, globular heads. 1883. A fine decorative plant. 
The variety stellata rubra plena has double flowers. 1890. 
H. involucrata (involucred). fl. lilac or yellowish, of two 
forms ; cymes clustered, before opening having a caducous, two- 
or three-leaved involucre. ?. ovate, acuminate, glandular- 
serrated, reticulate-veined, hispid on both sides. Mountains of 
Japan. Greenhouse. 
H. japonica (Japanese). A form of H. Hortensia, 
H. nivea (snowy). A synonym of H. radiata. 
H. petiolaris is a form of H. quercifolia. 
H. radiata (rayed). #. white, becoming wholly sterile under 
cultivation ; buds depressed. May and June. /. ovate, mostly 
cordate, acuminate, sharply serrated, silvery-tomentose beneath 
(this feature is often absent from cultivated plants). h. 6ft. 
ree South Carolina, 1786. Hardy. Syn. H. nivea (W. D. B. 
i. 43). 
HYDROCERA ANGUSTIFOLIA. The correct 
name of Tytonia natans (which see). Syn. H. triflora. 
HYDROCLEYS COMMERSONII. The correct 
name of Vespuccia Humboldtii (which see). Limno- 
charis Humboldtii is the same plant. 
HYDROCOTYLE (from hydor, water, and kotyle, 
a flat cup; in allusion to the habitat and to the cup- 
shaped leaves of some of the species). Orb. Umbellifere. 
A large genus (about seventy species) of stove, green- 
house, or hardy herbs or under-shrubs, with long, slender, 
creeping, often tufted stems, broadly distributed, especially 
in moist, temperate regions. Flowers minute. Leaves 
entire or palmately dissected. One or two of the species 
haye been introduced, but they are more of botanical 
than of horticultural interest. H. vulgaris is the common 
Pennywort or Pennyleaf. 
HYDROGLOSSUM. Included under Lygodium 
(which see). 
HYDROMYSTRIA. A synonym of Limnobium 
(which see). 
HYDROPELTIS. The correct name of H. purpurea 
is Brasenia Schreberi. 
HYDROPYRUM. A synonym of Zizania (which 
see). 
HYDROSME. 
(which see). 
HYDROTZENIA (from hydor, water, and tainia, a 
band ; the segments have a triangular bar at their base, 
which secretes a honey-like fluid). Orn. Iridex. A small 
genus (four species) of greenhouse or half-hardy, bulbous 
plants, natives of Mexico and Pern, and formerly included 
under Tigridia, from which they mainly differ in having 
a campanulate perianth, the segments being without any 
spreading blade. H. Meleagris and H. Van Houttei, the 
species in cultivation, will be found described under 
Tigridia. 
HYGROPHILA (from hygros, moist, and phileo, to 
love; some of the species are found in wet places). 
Asterocantha (which see) is included hereunder by 
Bentham and Hooker. Orp. Acanthacew. A genus 
embracing abont fourteen species of stove herbs, broadly 
dispersed over tropical and sub-tropical regions. . Flowers 
bluish-purple, sessile, in terminal heads or. axillary 
whorls; stamens didynamons. Leaves opposite, lanceolate 
or obovate, entire. 
H. spinosa (spiny). The correct name of the plant described on 
Included under Amorphophallus 
p. 140, Vol. L, as Asteracantha longifolia. 
HYLEMIA NIGRESCENS. See Carnation 
Maggot. 
HYLESINUS ATER. ‘Sce Pine Bark Beetles. 
HYLINE (from hyle, a wood; the genus was founded 
on a plant found in the woods of Brazil). Orb. 
Amaryllidex. A small genus (two species) of stove 
plants with the habit of Hymenocallis (which see for 
enlture), but differing in their numerous ovules and in the 
free perianth segments. Both are natives of Brazil. One 
of them has been introduced. 
H. Worsleyi (A. Worsley’s). jl. 8in. long, two to a scape; 
erianth segments white, narrow ; scape 1{ft. high. J. 14ft. long, 
in. broad. 1899. 
Vol. V. 
HYLOBIUS ABIETIS. See Pine Weevils. 
HYLOGYNE. A synonym of Telopea (which see). 
HYLONOME. A synonym of Behnia (which see). 
HYLOTOMA. See Rose Sawflies. 
HYLURGUS PINIPERDA. This is the name by 
which the destructive Beetle, formerly classed as Hylesinus 
piniperda, is now known. See Pine Bark Beetles. 
sae yea aad A synonym of Strumaria (which 
see). 
HYMENIUM. 
fungi. 
HYMENOCALLIS. According to J. G. Baker, this 
genus comprises thirty-one species, natives of tropical 
and sub-tropical America. Flowers usually pure white; 
stamens united in a distinct cup (corona), the free portion 
of the filaments filiform; peduncle solid, compressed. 
Leaves sessile and lorate or petiolate and oblong. To the 
species described on pp. 164-5, Vol. II., the following should 
be added (all have white flowers) : 
H. caribzea (Caribbean). jl. six to twelve in a sessile umbel; 
erianth tube 2in. to 3in. long; segments linear, 3in. to 34in. 
ong; corona regularly obconic, lin. long, faintly two-toothed 
between the free tips of the filaments, which are l4in. to 2in. 
long; peduncle acutely angled, little shorter than the leaves. 
June. /. a dozen or more, multifarious, lorate, acute, 2ft. to 3ft. 
long, 2in. to Sin. broad above the middle, narrowed to lin. at 
the base. Bulb globose, 3in. to 4in. in diameter. West Indies, 
1872. Stove. Syns. Pancratium cariveum (B. M. 826), 
P. declinatum (L. B. C. 558). 
Spore-bearing surface in certain 
Fic, 451. 
HYMENOCALLIS OVATA. 
H. concinna (neat). { 
evergreen, and smaller in all its parts. 
1893. Said to be quite hardy in Naples. 
H. cordifolia (cordate-leaved). fl. about twenty in an umbel; 
perianth tube 4in. or more in length, the segments 2in. long ; 
corona inconspicuous. J. broad, Eucharis-like, 24ft. long. Vene- 
zuela, 1899. Stove. (R. H. 1899, p. 445, f. 191.) 
H. crassifolia (thick-leaved). fl. four ina sessile umbel ; tube 
ereen, 2sin. long, the segments linear, 34in. long ; scape 2ft. high. 
1. six to eight, lorate, obtuse, bright green, 2ft. long, 2in. broad. 
Southern United States, 1871. Greenhouse. SYN. Pancratiuin 
crassifoliwm (Ref. B. 331). 
H. defiexa (deflexed). fl. three or four in a sessile umbel; 
erianth tube curved, lin. to 2in. long, the segments linear, 
in. to 4in. long; corona funnel-shaped, 2in. to Jin. long, with 
recurved processes lin. or more in length; peduncle ancipitous. 
1. ensiform, acute, 1ft. long, less than 2in. broad. Andes of 
Peru, 1839. Stove (probably a natural hybrid), Syn. Jsmene 
dejlexa. 
H. Deleuilii (Deleuil’s). 
A species resembling H. caribea, but 
i. lin. wide. Mexico, 
A synonym of H. littoralis. 
oK 
