1S48 



Li:r(\EXA 



LEUCO.IUM 



LEUCy^NA ■ jirobaWy fmni lircek, Icukon. wliitr, 

 n'fornuK to the llowcrsi. Lnjiimiiiox:! . Tliis pMuis 

 inchuios :i trxv known in soulliorn Kloriila :u< the white 

 (xtpinar, a rapul urowcr, with acacia-hkc foliage and 

 wliitisli lUnvors: it is :Uso iniltivatoil in S. C'ahfornia. 



Tiws or shrubs, tisvially unarnu'd, cvt-rRrfiMi: Ivs. 

 ;iltomat«', pinnato, stijx'llato: fls. usually perfect, in 

 elosc hoails, not papilionaeeous, tlie 5 petals beinn 

 «'panito; ejilyx .■>-lol)ett; stamens 10, not ulanilular, 

 oxscrtetl: ovary stiilked .and style lilifonn: iiod Hal. 

 brvwid-hnejir.— ViKH-ies •> or 10. Mex., Hiialeniala, Teru, 

 :ind r.ioitie Isls. The trees and .shrul)s of this genus have 

 the habit of Aeaeia, but belong to the Mimosa tribe. 



glaOca, Ik-nth. (,.lc<ifi(i fromld.sa, W'illd. .1. gtaiicti, 

 Moonch. A-Uucticiphala, Link. Mimosa ytaiica, Linn.). 

 Spineless, tree rv'aehing 30 ft. or more: pinna' 4-8- 

 pairetl; Ifts. 10-20 pain>d, oblong-linear to lanceolate, 

 oblique, glaucous below: heads of lis. globose, to \}i 

 in. diiun., white; petals erect, very narrow, aliout one- 

 third iii! long :i.s stamens: pod .'>-() in. long. Tro]). 

 Amer., but occurring in Kla. and Texius; naturalized 

 widely in Old World. — It is cult. ;us an ornamental tree, 

 and the young frs. and seeds are said sometimes to be 

 eaten with rice; re|M)rted also to be used in certain 

 regions :is a forage plant for sonic animals. 



L. trichMrt. Benth. (.\cacia Irichodes. Willd.). Trco-like: piii- 

 n» 2-3 pairs: Ifts. '^-5 pairs, ovate, acute: fl. -heads twin on 

 ajcillar>- pr<luncU-.i, S. .\m(T. T T-T n 



LEUCANTHEMUM (white flower). CompodUr. 

 An old grou|)-nanie for certain perennial herbs now 

 included in Chrysanthenuim. The most famili.-ir species 

 of the group is the connnon white-weed or "daisy" of 

 the northciustern states, Chryxanlhcmum Lcitcatilhniniiii 

 (or Liucaiithimum vuIiihtc of former works). As dis- 

 tinguished from Chry.-^anthemum, the genus Ixnican- 

 themum differs chiefly in ummi)ortant and inconstant 

 characters of the achene. 



LEUCHTENBERGIA (after Prince Leuchtenberg). 

 CncU'iciii, .\i;.\VK ('.\<tus. Stems in age forming a 

 trunk 2 in. or more in diam., by the shedding of the 



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y 



X/ 





■ 'til mW't &/ .'" 



i*f At' 



2139. Leuchtenbereia priocipU. ( X H) 



lower tubercles: tubercles triangular-actniiinate, sjiread- 

 ing, 2-1 in. long, ^ ■> ■'4in. wiile. with twisted papery 

 spines: (Is. funnelform, widely expande<l, borne near 

 tlie apex of yoimg IuIktcIcs: fr. gray, ovate-elliptical, 

 1 in. long, covered with scales and crowned by the [ler- 

 sistent H.; .seeds dark brown, minutely tuberculate. — 

 Only 1 species, clo.sely related to I'lcliiiiocMctus, but of 

 remarkably different form. The plant is readily grown 

 in the manner of l'>chinoca(rtus and Mamillaria. 



principis, Hook. A- Kisch. Fig. 21;{!I (adapted from 

 Botanical Magazine.) Hadial sjiines (i S, the central 

 one usually .solitarv, longer, .sometimes S in. long: fls. 

 yellow. B."M.4;5l«: A.G. 11:4()4. 



K.\T11.\UINK BkANDEGEE. 



LEUCOCORYNE {whi\f rliih, alluding to the sterile 

 anthers). Litioau. About a <lo7,en small bulbous plants 

 of Chile, allied to Milla and Brodia'a, htdf-hardy in 

 Englan<l, rarely i)lanted here; they probably require 

 the treatment given ixias. Plants scapose, with radical 

 Ivs., .and tunicate<l bulbs or corms: fls. few, in terminal 

 bracted umbels; i)erianlli with (i nearly or (juite equal 

 spreading oval-oblong or narrow lobes; stamens (5, of 

 which 3 are ])erfect and the others reduced to stam- 

 inodia: caps, membranaceous, 3-groovcd, dehiscent. 

 The species known to cult, are: L. ixithdcs, Lindl. One 

 foot: Ivs. about same length: fls. 4-(), white or pale 

 blue. B.^L 2382 (as Brodisa ixioidcs). B.R. 1293 (as 

 L. wloraUi). L. allidcea, Lindl. Six to 12 in.: Ivs. very 

 narrow, ()-S in. long; fls. pale lilac, J^in. long. 



LEUCOCRINUM (Greek, while lily). Liliacex. 

 White Mountain Lily. Sand Lily of Colorado. A 

 bulbous plant growing a few inches high, with narrow 

 ff)liage and clusters r)f pure white fragrant flowers borne 

 just above the goun<l in early sjiring. 



The fls. ar(' funnel-shaped, having a slender tube 2-4 

 in. long, the greater part of which is below the surface, 

 and (i lobes, each %-\]/2 in- 1""K. borne in clusters of 

 4 to many fls., tmd maintaining a suc<-ession for several 

 weeks. They should be desirable for edging walks and 

 bulb beds. They have a deep-seated rhizome and fleshy 

 roots. The bulbs are procurable from Colo, and Calif., 

 either as collected or nursery-grown stock. The genus 

 has a single species. It belongs to an anomalous group, 

 (•haracterized by almost total lack of st. and fls. solitary 

 or clustered among the radical Ivs. From the other 

 members of this group it is distinguished by the Ivs. 

 not 2-ranked, and an indefinite number of ovules in 

 each locule. Perianth-segms. narrowly lanceolate, 

 persistent ; stamens 6; style persistent, slightly 3-lobed. 



montanum, Nutt. Lvs. 8-12 or more, flat, rather 

 thick, 4-S in. long, 1-3 lines wide: pedicels li-lVi in- 

 long. Sandy soils and in mountain valleys, W. Neb. 

 and S. Dak." to Colo., Ore., .and N. Calif. 



,1. H. COWEN. 



LEUCOJUM (name discussed below). Also written 

 LeueoiiDii, .SiiKiri/lliildcru-. Snowklakk. Harily bul- 

 bous phuils growing a foot or less high and bearing 

 dainty, nodding, (i-parted flowers, which are white, 

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



Perianth-tube none; segms. uniform, ovate or oblong, 

 spreading; stamens epigynous; filaments filiform, 

 shorter than the linear-oblong btisifixed anthers; ovary 

 3-celled; ovules many in a cell, sujierposed; styles 

 filiform or strumosc near the apex; stigma minute, 

 capitate: fr. finally dehiscing loculicidally into 3 valves 

 from the top; seeds subglobose; testa usually black: 

 rootstock a bulb, with membranous tunics: Ivs. slender 

 or lorate: fls. 1 or several in an umbel, white, tinged 

 with red or green; spathe-valves usually single. — Eight 

 species, natives of lOu. and the Medit. region, of which 

 are cult. The name Leucojum was given by Linnaeus, 

 but he did not explain t!ie ;.i)i)lication. The old Greek 

 name, Lcucoion, was given by Theophrastus to a plant 

 now supf)osed to be a crucifer, like some stock or wall- 



