2000 



YrCCA 



YL'CCA 



tivated in the -western state-, but emerges from the pupa 

 too late to pollinate }'. (ilaii.a and disappears too early 

 for F. (jloriosa. See Kept. Mo. Bot. Gard. 3:99; 4:181. 

 The great Yuecas, or "Yucca Palms," of southern 

 California (Fig. :iT«0) are chiefly Y. uyhonsceiis. They 



276T. FInwer of Yucca 

 filamentosa t ■ ^■:; ) . 





2763. Flower of Yucca 



Whipplei. 



Tliroo ]K.t;ilsrciii<>vea 



tn s)ni\v slrut'tiire of 



frrnw in tb-' liJLilii.r l;iinl-'< Iiorderirii;- Tlir iMcjavc and ;ul- 

 jaLM.-iji (lf.s<.^rls, rra.-liin- a height uf l.V2(l ft. 'I'lie oM 

 plants^ a.re Hxceediu:::!}' weirfl aiul j)i('turt'S([a(-, Occa- 

 sinnally this sptrifs is traiisterrf.'d to iL^irdi-iis, l.nit it is 

 apparently not in the trade. 



alnjfolia, 0. 

 A iiflreanii . "k 

 aiii/iistifi'lia. 4. 



arn'ispdtlta, S. 



I.:i(-rata. 9. 

 CnliUn-,}ica, 1. 

 canaliculata, 8. 

 (Jarrierei . 5. 

 foncava, '1. 

 onii>;piru;i. 6. 

 DeU'id/i. :>. 

 draccenoidps, 5. 

 Draconis, 6. 

 elpgaiiK, 5. 

 Etlacoinhei, 5. 



L-xii,'n;i, .:, 

 fihiiiu-'iitnsa, 2. 

 flai.-cida, :i. 

 liexilis, :.. 

 glauf;i, 4. 

 glori(>s;i, .'>. 

 grami in folia. 1- 

 GualenuUensis, 7. 

 Haul'in-!,!, 4. 

 iiiteei";i, ■!■ 

 junci'fi, 5. 

 Icevinata, 3. 

 longifoUa, 8. 

 marginata, 5, 6. 

 Massilicn^is, 5. 



mcdin-striata. 5. 

 iKil'ilis, "i. 

 urrhlaides, 'A. 

 Orfijlfsiana, 1. 

 pi'iidiilK, 5. 

 plieata, 5. 

 pxibenda. 3. 

 qiiadricrilor, 6. 

 reeui'vifolia, 5. 

 striatida, 5. 

 strictiH, 4. 

 siilcafii. T), 

 Trecnl(^;iTia. i^. 

 Vcmrlrrrinniana, 8. 

 v;ivtf'g;it;i. 2. r>. 

 Whili|.lei, 1. 



A. /^r. t')y^rf, capsular: srrds thin 



'>n>f flat 



E. SlitiiiKi capifatf, Oil a .^h^nder 



^t!il<' 1. Whipplei 



BB. Stigtii" J- or 0-loh'f'l, ferttil- 



naliag a stoat sli/(e 2 filamentosa 



'■'.. flaccida 

 4. glauca 



AA. Fr. peadmif, iir>t dr]i isrt-nf. 



B. Si'eds IJiiii: !'i\ ivaJJ thin ami 

 so'Di di-i/: Irs. TisaalJij >'n- 



tin' ' 



BB. ISeeds thirl:: fr. pa lj>ij, sauet 

 and <:dlhh'. 

 c. Tlir fr. a-ifh<'n/ ,i rore. /na- 

 l.ilr -llr^hed : Jrs. nia.jh- 



waiyin.d 



CO. TJk' fr. infl/ inipirif core 

 ami :i'-l/,nrixh Hcxli. 



I.. Lm. rninih^inarqi,,,-:! 



PO. Xrs. iriUi ,!,■/, irhnnj mur- 

 i/iiiul fih,'rx irlirii adult. 



gloriosa 



ij. aloifolia 



Guatemalensis 



S. Treculeana 

 9, baccata 



1. Wliipplei, Torrev i V. grami nifoUii .W<",'\. V. Cnli- 

 foniiru and V. Ihiijuxiiliiii , Hort.), Pigs. -JTdl, 27i;:i. 

 Acaalescent: Ivs. ^^._, in. "wide, stiff, flat, striate, glau- 

 cous, needle-pointed, rough-margined : panicle very 

 tall, narrow, long - stalked. Coast Range, California. 

 G.(;. II. f):19i;. Gn. 33. p. Sfil. R.H. 188fi, p. 6f. B.M. 

 76ri2. Rep.Mo. Bot. Gard. 3, pi. II, 12,54. R.H. 1884::i24 

 (as yar. violilrcd ) . G.F. 8:415. — t-l rows everywhere in 

 southern Calif, and is a glorious sight when in bloom. It 

 is an easy plant to handle and has been known to flower 

 in three years from sped. Because of its peculiar stigma, 

 this is sometimes placed in a distinct genus, Hespero- 

 yucca. 



2. filamentosa, Linn. Figs. 2762, 2764-5; 10.52. Some- 

 times callfd Aium's Needle, Beak Ghass, Silk Gkass, 

 or Threaiiy Yli'CA. Acaulescent: Ivs. 1 in. wide, rather 

 weak, somewhat concave, glaucous when young, short 

 and stool, pointed fr(.>ni Ihe acute apex, with curly mar- 

 ginal libers; panicle bins,-, long-stalked; fls. creamy 

 white; style white. Southeastern U. S. B.M. 900. A 

 yellow- or white-margined tun]i is var. variegata, Carr. 

 B.B. 1:427. Vai-. concava, Engelni. [Y. c'oic«n/, Haw. ). 

 Lvs. broailly spatulate, plicate, concave. N. C. 



3. Jl^ccida, ITaw. ( }'. inil>rrnUt. n;iw. Y. orchio)fles, 

 Carr.). L\"s. more MexildM, rccur\'ing, not pungent, 

 gradually taprriutr, \vitli tbiinier ami less curly tibers. 

 Eastern 'r. S. 1-l.R. 22:1811.-,. |->..M. (;:n6. -U.sual'ly ctdti- 

 vated for the prcceiliog. ;nid cf>mprlsing several forms. 

 Vaf-. exigua :md Integra have the leaf-margin brown, 

 without detacbiiig libers. 



4. glauca, Nutt. {Y. anrivxlifoliii , Pursh. Y. Ili'ni- 

 hiirii'i. Bakerl. Pig. 2766. Lvs. less than '„ in. wide, 

 thin but stiff, Hat, acutely and pungently pointed, with 

 white' marein from which slender hheis detach them- 

 selves, whitish greet-) : panicle with 1 or 2 short branches 

 within the cluster of leaves, or usually reduced to a ra- 

 ceme: fls. greenish; stvlegreen. Rocky mountain region 

 anil plains. B.M. 223(i." G.F. 2:247. Rept. Mo. Bot. Gard. 

 6, p. 7. B.B. 1:427. -Var. stricta,Trel.( r. stricta, Sims). 

 Inflorescence freely braitclied at top of the leaf-cluster. 

 Southern plains. 13. M. 2222. 



5. gloriosa, Liitit. Nearly stemless or with slender 

 trunk, 10-15 ft. higli : lvs. 1-2 in. wide, thin but not re- 



5^ 



A'., 







j I ^\ 



I' -\ \ 





2764. Adam's Needle — Yucca filamentosa. 



From a plant 4 feet high. 



curved, somewhat concave, glaitcoits when young, pun- 

 gently pointed, brown-margined; panicle with ascend- 

 ing branches, short-peduncled; fls. often with a reddish 

 or brownish shading. Carolina coast region. — A form 



