2000 



YUCCA 



tivated in the western states, but emerges from the pupa 

 too late to pollinate K. qlanca and disappears too early 

 for r. gloriosn. See Kept. Mo. Bot. Oard. 3:99; 4:181. 

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

 California (Fig. 27G0) are chiefly Y. arborescens. They 



grow in the higli.r hni.l^ li.ir.l.iini; the Mojave and ad- 

 jacent deserts, i.:,,!,,),^ :, Im i-hi of 15-20 ft. The old 

 plants are excccdiiuh «. ii^l nn.l picturesque. Occa- 

 sionally this spt'i'i' V i> tr;iii-|. lied to gardens, but it is 

 apparently not in tlie trade. 



INDEX. 



aloifolia, G. ensifera, 5. medio-striata. 5. 



Andrpatia, 5. exigua. 3. nobilis. 5. 



angu$tifolia, 4. filamentosa, 2. orchioides, 3. 



arqospatha, 8. flaccida, 3. Ortgiesiana, 1. 



aspera, 8. flexilis, 5. pendula. 5. 



baccata. 9. glauca, 4. plicata, .'i. 



Califomim, 1. gloriosa, 5, puhernla. 3. 



canalicutata, 8. graminifolia, 1. quadricolor. 6. 



Carrierei, 5. Guatemalensis, 7. recurvifolia, 5. 



coneava, 2. Batiburyi, 4. striatula. 5. 



conspicua, C. intsEra, 3. stricta. 4. 



Deleuili. 5. juncea, 5. sulcata. f>. 



drac{eHoides, 5. laevigata, 5. Treeule.niia. S. 



Draeonis.e. longifolia. S. Tanderrinniana.S. 



elegans, 5. marginata, 5, 6. variec.nta. 2, .'). 



Ellacombei, 5. Massiliensis, 5. Whlpplei. 1. 



A. Fr. erect, capsular: needs thin 



and flat 



B. Stigma capitate, on a nlender 



style 1. Whipple! 



BB. Stigma 3- or 6-lobed, termi- 

 nating a stout style 2 tilamentosa 



.'!. flaccida 

 4. glauca 

 AA. Fr. pendent, not dehixmit. 



B. Seeds thin: fr. wall Ihhi iimj 

 .«or)» dry: Ifs. Hxiiully rii- 

 tirr 5. gloriosa 



/,l,-n,:l,.,l: Irs. ,',„i,jh. 



iiKiryiii: 'I (>. aloifolia 



CC. The fr. irill, /"(/I. r// riirr 

 and ,lrll..,r,sl, II, sh. 



D. Lvs. riiKiih-iinnyiiir,! 7. Guatemalensis 



PD. Lvs. with detachiug mar- 

 ginal fibers when adult. 8. Treculeana 

 9. baccata 



1. Whipplei, Torrey (F. ffraw;»//V-; ,W l )'. Cali- 



fdrnica and V. OrtgiesiAna, Hoir, i ,1, I'TtiS. 



Acaulescent: Ivs. >2 in. wide, stiii. : .i. -lau- 



cous, nocdlr-pninted. rmiffh-mru li ' . | . ..ii vi'ry 

 tall, iinrr..^. l":r- -t:,M:.-.| c,,;, ■ 1; ... ( ,,i,r..rnia. 



G.C. II •■ '■■' ■'- -■ " '■■■' ': !■ I--. I'. I'l. li.M. 



7662. K-i •: ■ !■- '-.- i ! I ! ■ K.li. Is,sl::;24 



southern (JmIiT, himI i- :. -|.,,'i..n- -l,L-,lil -aImii in'l iI. .0111 . It 



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

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

 this is sometimes placed in a distinct genus, Hespero- 

 yucca. 



J 



y UlamentdBa, Linn. Fii 

 times called .\i>am's Xeehi. 



3. fUccida, Haw. 

 Carr.). Lvs. mon 

 gradually taperiiii: 

 Eastern "U. S. B.K 



ride 



laucous when young, short 

 loute apex, with curly niar- 

 loiig-stalked: fls. creamy 

 asicrii V. S. B.M. 900. A 

 .rill IS \ar. varieg^ta, Carr. 

 ,^.1,,,,, )■. ,o,»-,}ra,Haw.). 



ave the leaf -margin brown, 



■i.^ififdlia, Pursh. F. Hon- 

 Lvs. less than ^ in. wide, 

 lid pungently pointed, with 

 lender fibers detach thera- 

 li- with 1 or 2 short branches 



Southern plains. P.M. 2222. 



5. gloridsa, Linn. Nearly stemless or with sle 

 trunk, 10-15 ft. high: lvs. 1-2 in. wide, thin but no 



'y^i'iK>^^'- 



curved, somewhat concave, glaucous 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 



