leuc.t:na 



Mexico, Guatemala, Peru, and Pacific islands, but L. 

 glauca is found in the tropics o£ botli worlds. It grows 

 wild in tbeWest Indies and in western Texas. The trees 

 and shrubs of this ^'enus have the habit of Acacia, but 

 belong to the Mimosa tribe, which is characterized by 

 stamens 10 or less. Generic characters are: calyx .5-den- 

 tate : stamens 10, not glandular: pod broadly linear, 

 stalked, flat-compressed, chartaceous, 2-vah'ed : seeds 

 compressed. Araeia trichodes is L. trkhodes, Benth., 

 but it is not in the trade. 



glauca, Benth. {Ac&cia frondbsa, Willd. A. r/Jancn, 

 Jloench). Spineless: branches and ]>etii)les powdery: 

 pinnte 4-8-paired; Ifts. 10-20-paired, oblung linear, glau- 

 cous below: pod 5-C in. long. 



LEUCHTENBfiKGIA (after Prince Leuchtenberg). 

 C'acUlci'o:. Agave Cactus. Stems in age forming a trunk 

 2 in. or more in diam., by the shedding of the lower tuljer- 

 cles: tubercles triangular-acuminate, spreading, 2-4 in. 



LEUCOPHYLLLTiM 



907 



1269. Leuchtenbergia pnncipis (X ^3) 

 (Adapted trom Botanical Mag.izuie.) 



long, l4-% in. wide, with twisted papery spines : fls. f un- 

 nelforra, widely expanded, borne near the apex of young 

 tubercles: fr. gray, ovate-elliptical, 1 in. long, covered 

 with scales and crowned by the persistent dower: seeds 

 dark brown, minutely tubercTilate. Only 1 species, 

 closely related to Echiuocactus, but of remarkably differ- 

 ent form. The plant is readily grown in tlie manner of 

 Echinocactus and Mamillaria. 



principis. Hook. & Pisch. Fig. 12(;0. Radial spines 

 6-8, the central one usuallv solitarv, longer, sometimes 

 8 in. long: fls. yellow. B.M. 4393. A. G. 11:464. 



Katharine Bkandegee. 



LEUCOCRtNTJM (Greek, ic7i(7c ?(7i/). LUidcea. Sand 

 LiiLY of Colorado. A hardy bulbous plant growing a few 

 inches high, with narrow foliage and clusters of pure 

 white, fragrant fls. borne just above the ground in early 

 spring. The fls. are funnel-shaped, having a slender 

 tube 2-4 in. long, the greater portion of which is below 

 the surface of the soil, and G lobes, each ^li-lV, in. long. 

 They are borne in clusters of 4-man3^ fls., and maintain a 

 succession for several weeks. They should be desirable 



for edgmg walks and bulb beds. Thev have a deep. seated 

 rhizome and fleshy roots. The bulbs are procurahio 

 from Colorado and California, either as collected or nur- 

 sery-grown stock. The genus has only one species. It 

 belongs to an anomalous group, characterized by almost 

 total lack of stem and fls. solitary or clustered among 

 the radical Ivs. Prom the other members of this group 

 it is ilistinguislu'd by the Ivs. not 2-ranked, and an in- 

 dehnite nuuibpr of ovules in each locule. Perianth seg- 

 ments narrowly lanceolate, persistent: stamens (i: stylo 

 persistent, slightly 3-lobed. 



montanum.Nutt. Sand Lily of Colorado. Lvs. 8-12or 

 more, flat, ratlier thick, 4-8 in. long, 1-3 lines wide: 

 pedicels K-i;. in. long. j, jj. Cowen. 



LEUCdJDM (name explained below). Also written 

 Leiicoluni, Aiiniriillidt'icew. Snowflake. The Snow- 

 flakes are hardy bulbous plants growing a foot or less 

 high and bearing dainty, nodding, 6-parted fls., which 

 are white, tipped with green, yellow, or a tinge of red. 

 They are less popular than Snowdrops (Gala'ntlius), to 

 which they are closely related, and have larger fls., with 

 all the segments of equal size. There are 8 species, na- 

 tives of Europe and the Mediterranean region, 4 of which 

 are cult. Perianth-tube none; segments ovate or oblong. 

 Baker, Handbook of the Amaryllidea?, 1888. The name 

 Leucojum was given by Linn;eus, hut he did not explain 

 the application. The old Greek name, Leucoio>i,w<i.s given 

 by Theophrastus to a plant now supposed to be a cruci- 

 fer, like some stock or wallflower. Leiicoioii is from 

 leiikos, shining, white, and ion, violet. Snowflakes ap- 

 pear about the s.ame time as white violets, and some- 

 times have a delicate odor, resembling that of the violet, 

 but the form of the fls. is very difterent. For culture, 

 see Bulbs. 



A. Blooininij in March. 



vSrnum, Linn. Spring Snowflake. Bulb globose, 

 %-l in. in diameter: lvs. strap-shaped, finally (>-9 in. 

 long, 4-6 lines wiile: scape %-l ft. long, usually l-fld.: 

 perianth segments white, tipped green : seeds with a 

 pale, membranous coat and conspicuous strophiole. 

 Central Eu., France to Bosnia and Tyrol. B.M. 46. G.C. 



II. 11 : 399; 21: 341 ; 23:341. P.G. .■■): 47. Gn. 2.-), p. 335, and 

 29, p. 607. V. 8:09. Var. CarpAthicum, Herb., has 

 perianth segments tipped velhiw. B.M. 1993. ,T. H. 



III. 32: 169. G.M. 39: in.5. A choice form, usually bear- 

 ing 2-4 fls. 



aa. lUooming in April and May. 



sestlviam, Linn. Sujimee Snowflake. Bulb ovoid, 

 1-1>2 in. in diameter: lvs. strap-shaped, \-\yi> ft. long: 

 scape 1 ft. long, 4-8-fld. : perianth segments white, 

 tipped green: seeds with a black, hard-shelled coat and 

 no strophiole. Blooms end of April and beginning fif 

 May. Central and S. Eu. Mn. 9:4ri. P.G. 1:7^ V. 3:342 

 and 8:70. 



pulcMlIum, Salisb., differs from L. a>stiviim by its 

 smaller fls. and capsule, narrower Ivs. and fls. afortnight 

 earlier. Sardinia and Balearic Isles. 



AAA. Blooming in auiumn. 



autumn&le, Linn. (Acis aiifinnnalis, Salisb.). Au- 

 tumn Sxowflake. Bulb globose, ?o in. in diameter: Ivs. 

 thread-like, usually produced after the fls.: scape very 

 slender, 3-9 in. long, 1-3-fld. : perianth segments white, 

 tinged with red: stamens half as long as segments. 

 Portugal and Morocco to Ionian Islands. B.M. 960.— 

 Not satisfactory everywhere. 



roseum, Martin. Bulb globose, }i-}4 in. in diam. : 

 peduncle shorter and usually l-fld.: perianth segments 

 ^;; in. long, rose-red, oblanceolate: stamens ^ii in. long. 

 Corsica. — L^sually difficult to grow, and little known 

 horticulturally. " j. x, Gerard and W. M. 



LEUCOPHYLLUM (Greek, i(7i(7<? leaf). Serophiilnriil- 

 ceir. This inchnles a rare shrub from southern Texas, 

 the leaves of which are covered beneath with silvery 

 white wool. It has showy violet-purple, bell-shaped fls. 

 an inch across, borne in spring. In cultivation it flowered 

 for the first time in 1890, at Augusta, Ga., with P. ,1. 

 Berckmaus. It is now cult, in S. Fla., and deserves cul 

 tivation everywhere in the South. According to C. ."" 

 Sargent, "There is no shrub of the desert portions of 



