ALOE 



ALOE 



257 



like apical thread, white-warty in transverse lines on 

 the back and with rather small close white marginal 

 teeth: infl. 1-1 } A ft. high; fls. 1J in. long, reddish 

 yellow, the moderately long tube somewhat constricted 

 above the base. Cape. Gt. 1883, p. 151. Salm, Aloe 

 15, f. 7. Lyon Hort. 22, 307. Berger 61. In aspect 

 resembling Haworthia. Varies in a nearly smooth- 

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

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

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

 xperfectior, Berger, A.xChludomii, Beguin, A.xLap- 

 aixii, Radl., A.xQuehlii, Radl., A. x Nowdtnyi, Radl., 

 A. x Bedinghausii, Radl., and A. xSimonwna, Deleuil. 

 All are known or believed to be crosses with species of 

 the related genus Gasteria. 



cc. The Ivs. not bristle-tipped, rather coarsely toothed, 



sometimes warty. 

 p. Teeth pale, racemes rather long. 



6. humilis, Haw. (A. perfoliata hiimilis, Linn.). Lvs. 

 suberect, rather incurved, triangular-lanceolate, % x 4 

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

 tuberculate, at least on the back, and with rather 

 close large white marginal teeth: infl. lJ^-2 ft. high; 

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

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

 15, f. 1. With somewhat the habit of Haworthia. 

 Varies from the narrow green-lvd. type into glaucous 

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

 (A. incurva, Haw.), EM. 828, Salm, Aloe 15, f. 3, 

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

 (A. echinata, Willd.), Salm, Aloe 15, f. 2., Berger 

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

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

 var. suberecta, Baker (A. suberecta, Haw. A. acumi- 

 nate major, Salm-Dyck), which is sometimes white- 

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

 broad-lvd. form, var. acuminata, Baker (A. acuminata, 

 Haw., A. suberecta, Haw.), B.M. 757; and a small blue- 

 glaucous form with closer prickles and smaller warts, 

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

 Hybrids are: A. xinslgnis, Brown (A. humilis x A. dre- 

 panophylla), A.xspinosissima, Hort. (A. humilis echi- 

 nata x A. arborescens pachythyrsa), A. X cyanea, Hort. (A. 

 humilis incurva x A. arborescens frutescens) , A. x Toddri, 

 Borzi, (A. Todari praecox, Borzi,) A. xGrusonii, Henze, 

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

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

 and perhaps A. x Ixtecocdnea. 



7. virens, Haw. Lvs. curved, 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 

 very short segm. Cape. B.M. 1355. Salm, Aloe 15, 

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



DD. Teeth dark: racemes short. 



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

 ing, 1-2 x 4-6 in., acute, striate, with large chestnut or 

 blackish prickles on the margin and toward, the top of 

 the back: infl. 1% ft. high; fls. 1^-1 }4 in. long, yel- 

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

 B.M. 6705. Berger 67. 



9. glafica, Mill. (A. rhodacdntha, DC.) Shortly 

 caulescent: Ivs. erect-spreading, 1^-2x6-8 in., acu- 

 minate, somewhat white-lined, with close strong reddish 

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

 high; fls. \'%, 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. muricata, Schult., A. glauca 

 spinosior, Haw.). 



17 



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

 or merely rough-edged: pedicels rather short. 



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

 with a leafy st. 6-9 in. high: Ivs. 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. l%-l%in. 

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

 the nearly cylindrical tube. Cape. B.M. 513. DC., PL 

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

 Wien. 111. 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. Inhabit 

 resembling Haworthia. Varies in a form with broader 

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

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

 Gasteria candicanst), A. x Rebidii, Hort. (A. variegata x 

 Gasteria, sp.), A . x Desmetiana, Hort. (A. variegatax 

 humilis echinata minor), A. x imbricdta, Hort. (A. varie- 

 gata or A. serrulata x ?), A. x mortolensis (A. variegata x 

 Gasteria acinaciformis). 



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

 Fig.171. At length short-std. : Ivs. 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. 1J^ 

 ft. high; fls. lJ^-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- 

 phyllum borbonicum'"!). 



BB. Plants moderately large: Ivs. 6 or 8 to mostly 12-80 

 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 fas. unarmed: infl. compoundly corymbose, with 

 very short racemes. 



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

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

 4-6 x 15-20 in., triangular-oblong, pale or reddish, 

 somewhat pruinose, striate, with entire white carti- 

 laginous margin: infl. 2-3 ft. high ; ample; fls. 1J4 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 Ivs., var. rhodo- 

 cmcta, Hort. (A. Haribun- 

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

 553, and a form with white- 

 blotched Ivs., var. oligo- 

 speua, Baker, B.M. 5210. 

 Hybrids: A. x Schimperi, 

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

 Borliana, TerT.;A.xSch<en- 

 landii, Baker; A.xPdxii, 

 Terr.; A.xLynchii, Baker, 

 G.C. 111.29:199; A.x Der- 

 betzii, Hort. ; A . xleptophylla, 



Brown, B.M. 7624, Berger 



70, and a narrower- Ivd. m Aloe serrulau . (No . UJ 

 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 Ivs. toothed: infl. simply corymbose, or 



unbranched when poorly developed. 



D. Racemes short. 



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

 saponaria minor, Haw. A.disticha, Mill. A. xmaculosa, 

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



