YUCCA 



YUCCA 



3531 



AA. Lrs. not toothed, trith marginal threads: fr. fleshy. 

 5. baccata, Torr. Nearly acaulescent : Ivs. 2 in. wide, 

 very rough and concave, with coarse threads: infl. 

 erect, 3 ft. high: fls. very large (3 in. long): fr. some- 

 times 8 in. long. S. Colo, to New Mex. and Nev. R.H. 

 1887, p. 368. G.C. III. 28:103. Gn. 16, p. 517; 35, 



p. 585. I.H. 20:115. 



Rep. Mo. Bot. Card. 



13:68, 69, 85. G.Z. 21, 



p. 78. 



6. australis, Trel. (F. 

 baccata australis, Engelm. 

 F. fill/era, Chab.). Be- 

 coming a large tree: Ivs. 

 1 in. wide, smooth, rather 

 flat, with short coarse 

 threads: infl. hanging, 

 3-6 ft. long: fls. and fr. 

 small. E. Cent. Mex. 

 R.H. 1876, p. 433; 1884, 

 p. 53; 1910, p. 401. Gn. 

 10, p. 554. G.F. 1:78. 

 Bull. Soc. Tosc. Ort. 

 14:9. Contr. U. S. Nat. 

 Her. 5:38. Rep. Mo. 

 Bot, Card. 3:3, 4; 13: 

 60, 61, 85. G.W. 10, pp. 

 84,631. 



AAA. Lxs. entire, trans- 

 ienily denticulate, or 

 slightly fliferoua. 

 B. Fr. fleshy. 



7. Treculeana, Carr. 

 (F.dspera,Regel. Y.lon- 



pifdlia, Buckl. Y. Van- 



dernnniana, Koch. F. 



argospatha, Verlot. F. 



agavaides, Y. contdrta, 

 and F. cornuta, Hort.). Fig. 4023. Small tree: Ivs. 1-2 in. 

 wide, rough, very concave, at first entire or slightly 

 denticulate, becoming sparingly filiferous: infl. with 

 large bracts below. Texas to E! Mex. H.F. II. 6:236. 

 R.H. 1869, p. 406; 1887, p. 368. Gn. 12:328; 35, p. 

 585. S.S. 10:498. Rep. Mo. Bot. Card. 13:52, 84. G.F. 

 1:55 (adapted in Fig. 4023). The broader-lvd. form is 

 var. canaliculata, Trel. (F. canalicidata, Hook. F. 

 revoliita, Hort. F. undidata, Koch). B.M. 5201. Rep. 

 Mo. Bot. Card. 13:53, 54. Gn. 73, p. 254. 



BB. Fr. dry but indehiscent. 



8. gloridsa, Linn. (F. acuminata, Sweet. Y. gloridsa 

 acuminaia, Carr. Y. integerrima, Stokes). Short- 

 trunked or arboreous: Ivs. 2 in. wide, stiff, smooth, 

 nearly flat, usually with a few teeth when young or a 

 few threads when old: fls. often reddish tinged: fr. 

 drooping. .Coast, from S. C. to Fla. Duhamel, Arbr. 

 325. R.H. 1877, p. 287. S.S. 10:503. G.C. III. 28, p. 

 262. Gn. 49, p. 218. Rep. Mo. Bot. Card. 13:43, 44, 

 84. A smaller form is f. minor, Carr. Rep. Mo. Bot, 

 Card. 13:45. Ref. Bot. 5:319. A form with median 

 variegation is f. medio-striata. F.S. 23:2393, 2394. 

 Forms with the outer Ivs. somewhat recurving are 

 var. robusta, Carr., B.M. 1260. Redout^, Lil. 6:326, 

 327. and its more glaucous form f. nobilis, Carr. 

 (F. Ellacbmbei, Baker. F. gloridsa Ellacbmbei, Baker). 

 Ref. Bot. 5:317. With glaucous Ivs. very plicate toward 

 the end it is var. plicata, Carr., Gn. 31, p. 161; 45, p. 

 45: 49, p. 332. G.C. II. 19:821; III. 8:692; 15:304. 

 Maund, Bot. Card. 3:286, a taller greener-lvd. form of 

 which is f. superba, Baker (F. superba, Haw.). B.R. 

 1690. G.C. II. 12:689. Gn. 33, p. 202; 58, p. 446. Rep. 

 Mo. Bot. Card. 3:7; 13:46, 84. 



9. recurvifdlia, Salisb. (Y. gloridsa recurvifdlia, 

 Engelm. F. recun-a, Haw. F. pendula, Groenl. F. 



4022. Flowers of Yucca 

 filamentosa. (XJz) 



gloridsa mdttis, Carr. F. gloridsa planifdlia, Engelm.). 

 Short-stemmed: Ivs. 2 in. wide, flat, recurved, green: 

 fr. erect. Coast of Ga. and Miss. Salisb. Farad. Lond. 

 31. Ref. Bot. 5:321. Gn. 1, p. 238; 8, p. 136; 47, p. 

 337. J.H. III. 42, p. 246. R.H. 1858, p. 434; 1859, p. 

 490. Rep. Mo. Bot. Card. 13:46, 47, 84. A form with 

 median yellow variegation is f. variegata, Trel., and one 

 with a reddish stripe is f. elegans, Trel. IJL 30:475. 



BBB. Fr. not known. 



10. flexflis, Carr. Scarcely differs except in its nar- 

 rower Ivs. and long-stalked infl. R.H. 1859, p. 400. Gn. 

 8, p. 129. Rep. Mo. Bot. Card. 13:47. Ref. Bot. 5: 318. 



11. De Smetiana, Baker. Caulescent, 5-6 ft. high: 

 Ivs. stiffly recurved, short, 1-1 H in. wide, purplish, 

 crowded, resembling those of a lily, sometimes slightly 

 rough-margined at base : fls. and fr. unknown. Mex.(?). 

 Rep. Mo. Bot. Card. 13:48. 



AAAA. Lvs. sharply rough-edged: fr. fashy. 



12. aloifdlia, Linn. (F. semdata, Haw. Y. crenu- 

 lota, Haw.). Slenderly caulescent: Ivs. dagger-like, 

 very pungent: fr. black-purple, without a core. W. 

 Indies and Mex. to Va. and around the Gulf. D C. 

 PL Gr. 1:20. Redoute", Lil. 7:401, 402. B.M. 1700. 

 S.S. 10:497. Rep. Mo. Bot. Card. 3:7, 44; 4:18; 

 6:45-^7; 13:49, 84. With Ivs. yellow-margined it is f. 

 marginata, Bommer. Xaudin, PL Feuill. Col. 2:52. 

 G.W. 18:207. With Ivs. yellow or white in the center 

 it is f. tricolor, Bommer, also often known as F. tri- 

 color, Y. quadricolor, because shaded with red when 

 young, and F. medio-pida. Y. aloifdlia Mendndii, 

 Trel., is a very narrow-lvd. form of this. Rep. Mo. Bot. 

 Card. 13:50. 



13. elephintipes, Regel (F. guatemalensis, Baker. F. 

 Lennedna, Baker. F. Mooredna, Y. Ghiesbreghtii, and 

 F. Robzlii, Hort. Dracaena Lennedna, D. Lennei, 

 D. Ehrenbergii, D. Fintelmdnni, and D. yuccoldes, Hort.). 

 Becoming a rather large tree with swollen base: Ivs. not 

 pungent, 2-3 in. wide: fr. yellow. S. E. Mex. Ref. Bot. 

 5:313. B.M. 7997. Gn. 67, p. 178. G.C. III. 18: 

 523. Rep. Mo. Bot. Card. 4:1, 2, 19; 13:51, 82, 84. 

 F. gigantea,^Ijem., planted in the Azores and around 

 the Medit., is scarcely different. Rep. Mo. Bot. Gard, 

 9:40-42. 



F. Dr<fco=Y. flaccidaXY. aloifolia. 7. bxrlsnih6ruis=Y. 

 filamentoea X Y. glauca. Y. rek<ncskidna=Y. filamentous X Y. 

 gloriosa. Y. TFWppiei=Hesperoyucca. 



WILLJAM TRELEASE. 



4023. Yucca Treculeana. 



