ALOE 



ALOE 



257 



like apical thread, white-warty in transverse lines on 

 the back anil with rather small close white marginal 

 teeth: infl. 1-1'2 ft- high; fis, 13| in. long, reddish 

 yellow, tlie moderately long tube somewhat constricted 

 above the base. Cape. Gt. 1,SS3, p. 151. Salm, Aloe 

 §1.5, f. 7. Lyon Hort. 22, 307. Berger 61. — In aspect 

 resembling Hawortliia. Varies in a nearly smooth- 

 Ivd. form. var. leiophylla, Baker, and a gray-lvd. form 

 with 2-ranked tubercles, var. parvifolia, Baker. Hybrids 

 are: A.x pronimpcns, Berger, A.x Beguinii, Hort., A. 

 xperfcclior, Berger, A.xChlwidmii, Beguin, A.xLap- 

 aixii, Radl., .1. xQiiehlii, Radl., A. x Noivdtnyi, Radl., 

 A.x Bediiighaiixii, Radl., and A.xSimoniana, Deleuil. 

 All are known or believed to be crosses with species of 

 the related genus Gasteria. 



cc. The h's. not brislle-lipped, rather coarsely toothed, 



sometimes warty. 



D. Teeth pale, racemes rather long. 



6. h&milis, Haw-. {A. perfoliata humilis, Linn.). Lvs. 

 suberect, rather incurved, triangular-lanceolate, %x4: 

 in., gradually acute, somewhat striate, sharply white- 

 tuberculate, at least on the back, and with rather 

 close large white marginal teeth: infl. 1}'2'2 ft. high; 

 fls. 1)2 in- long, red or yellowish, the green-tipped 

 segm. distinct nearly to the base. Cape. Salm, Aloe 

 §1.5, f. 1. — With somewhat the habit of Haworthia. 

 Varies from the narrow green-lvd. type into glaucous 

 forms of this, with rather thicker lvs., var. incurva, Haw. 

 {A. inciirva, Haw.), B.M. 828, Salm, AloeJlS, f. 3, 

 and rather thin, more concave lvs., var. echinata, Baker 

 {A. echinalir, Willd.), Sahn, Aloe §15, f. 2., Berger 

 64, 65. and one with purplish lvs., var. macilenta, 

 Baker: a.^ well as a broader-lvd. glaucous large form, 

 var. suberecta, Baker {A. stiberecta, Haw. A. acumi- 

 7xatn major, Salm-Dyck), which is sometimes white- 

 mottled, var. semiguttata, Haw.; a moderately large 

 broad-lvd. form, var. acuminata, Baker (^4. acuminata, 

 Haw., A. .'suberecta, Haw.), B.I\L 7.57; and a small blue- 

 glaucous form with closer prickles and smaller warts, 

 var. subtuberculata, Baker {A. subtuberculata, Haw.). 

 Hybrids are: .4. x insignis, Brown {A. humilis xA. dre- 

 panophylla I , A.xspinosissimu, Hort.. (A. humilis echi- 

 nata X A. arborescens pachythyrsa), A. xcyanea, Hort. {A, 

 hiit)nlis incurva x A. arborescens frutescens) , A. x Todari, 

 Borzi, (.4. Todari prscox, Borzi,) A. xGrusbnii, Henze, 

 Monatschr. Kakteenk. 11, p. 57. {A. humilis xA.Schim- 

 peri), A. x Henzei, Hort.. (A. Grusonii xA. variegata), 

 and perhaps .4. x Isetecoccinea. 



7. viiens. Haw. Lvs. cur\-ed, spreading, triangular, 

 about 1x8 in., somewhat mottled or also lined, not 

 warty, with rather distant, coarse, white, marginal 

 teeth: infl. about 2 ft. high; fls. lJ^-2 in. long, red, the 

 tube longer than the paler green-tipped sometimes 

 verv short segm. Cape. B.M. 13.55. SaLm, Aloe §15, 

 f. 8". Berger 62, 63. Journ. et Fl. des Jard. 1832, 20. 



DD. Teeth dark: racemes short. 



8. pratensis, Baker. Acaulescent: lvs. erect-spread- 

 ing, 1-2 X 4-(i in., acute, striate, with large chestnut or 

 blackish prickles on the margin and toward the top of 

 the back: infl. l\i ft. high; fls. IJ^-lJ^in. long, yel- 

 lowish red, the distinct segm. green-tipped. Cape. 

 B.M. 6705. Berger 67. 



9. gla&ca, Mill. (A. rhodacdntha, DC.) Shortly 

 caulescent : lvs. erect-spreading, 1 3'2-2 x 6-8 in., acu- 

 minate, somewhat white-Uned, with close strong reddish 

 prickles on margin and back at apex: infl. 2-2J^ ft. 

 high; fls. IJ.4 in. long, red, the nearly distinct segm. 

 somewhat paler and green at tip. Cape. Salm, Aloe 

 §17, f. 2. DC, PI. Gr. 44. B.M. 1278.— This pale-lvd., 

 always strongly armed species varies in a distinctly 

 caulescent less glaucous form with even larger prickles, 

 var. muricata, Baker (A. muricdta, Schult., A. glaiica 

 spinbsior, Haw.). 



17 



ccc. The lvs. not bristle-tipped or warty, minutely toothed 

 or inerely rough-edged: pedicels rather short. 



10. variegata, Linn. (A. punctata. Haw.). At length 

 with a leafy st. 6-9 in. high: lvs. green, ascending, in 3 

 close oblique ranks, about 1 x 2-5 in., triangular, 

 V-shaped, abruptly acute, crossed by bands of elon- 

 gated white blotches, edged and keeled by cartilaginous 

 warty, or toward the tip serrate rather than toothed, 

 white borders: infl. about 1 ft. high; fls. IJ-^-lJ^in. 

 long, red, the green-nerved segms, rather shorter than 

 the nearly cvhndrical tube. Cape. B.M. 513. DC, PI. 

 Gr. 21. Salin, Aloe §20, f. 2. Berger 68. G.Z. 4:92. 

 Wien. lU. Gart. Zeit. 1904, p. 122. Gt. 29, p. 25. 

 Mordaunt, Hb. 2:90. Lyon Hort. 21, p. 62; 22, p. .307. 

 Deutsch. Tiefsee-Exped. 2:124. F.E. 8:98.— In habit 

 resembling Haworthia. Varies in a form with broader 

 lvs. with smaller less banded blotches, var. Haworthii, 

 Berger. Hybrids: A . x smardgdina, Hort. (A . variegata x 

 Gasteria candicansl), A. x Rebiitii, Hort. (A. variegata X 

 Gasteria, sp.), A.x Desmetiana, Hort. {A. variegata x 

 humilis echinata minor), A. X imbricata, Hort. {A. varie- 

 gata or A . serrulata x ?) , A.x mortolensis {A . variegata X 

 Gasteria acinaciforniis) . 



11. serrulata, Haw. (A. perfoliata serrulata, Ait.). 

 Fig.171. At length short-std.: lvs. somewhat glaucous, 

 rather spirally arranged and spreading, 2 x 8 in., ovate, 

 nearly flat above, with scattered elongated white 

 blotches and serrulate white margin and keel: infl. 13^ 

 ft. high; fls. 13^-2 in. long, red, the green-nerved 

 segms. scarcely equaling the somewhat constricted tube. 

 Cape. B.M. 1415. Salm, Aloe §20, f. 1. Berger 68. 

 Hybrids: A.xHdyeri, Radl. {"A. serrulata x Lomato- 

 phylium borbonicum,' ' ? ) . 



BB. Plants moderately large: lvs. 6 or 8 to mostly 12-20 

 in. long, smooth: st. never tall: infl. usually 

 branched on strong plants; fls. saccate at base, then 

 constricted, or in the last two less saccate, and 

 widened above the constriction; filaments little if 

 at all exserted. 



c. The lvs. unarmed: infl. compoundly corymbose, with 

 very short racemes. 



12. striata, Haw. (A. paniculata, Jacq. A. dlbo- 

 cincta, Haw.). Nearly simple: lvs. upcurved-spreading, 

 4-6 X 1.5-20 in., triangular-oblong, pale or reddish, 

 somewhat pruinose, striate, with entire white carti- 

 laginous margin: infl. 2-3 ft. high, ample; fls. \]/i in. 

 long, red or yellowish, the pale-tipped segms. much 

 shorter than the tube. Cape. Jacq. Fragm. 62. G.C. 

 III. 36: 423. Berger 69.— 

 Varies in a form with red- 

 margined lvs., var. rhodo- 

 cincta, Hort. (A. Hanburi- 

 ana, Naudin), G.W. 3, p. 

 553, and a form with white- 

 blotched lvs., var. oligo- 

 speila, Baker, B.M. 5210. 

 Hybrids: A. x Schlmperi, 

 Tod., Hort. Pan. 16; A.x ' 

 Bortidna, Terr. ; A.x Sc/iceji- 

 Idndii, Baker; A.xPdxii, 

 Terr.; A.xLynchii, Baker, 

 G.C. III. 29: 199; A. x Der- 

 betzii, Hort. ;A.xleptophylla, 

 Brown, B.M. 7624, Berger 

 70, and a narrower- Ivd. 

 form of it, var. stenophylla, 

 Baker. Unnamed hybrids with A. saponaria are known, 

 and A . X Schimperi has been recrossed with A . striata. 



cc. The lvs. toothed: infl. simply corymbose, or 



unbranched when poorly developed. 



D. Racemes short. 



13. saponaria, Haw. (A. perfoliata saponaria. Ait. A. 

 saponaria ynhior, Haw. A.disticha, Mill. A. xmaculbsa, 

 Lam. A. umbellata, Salm.-Dyck. A. umhellata minor, 



171. Aloe serrulata. (No. ll.J 



