HATIORA 



HAAVORTHIA 



1433 



arise the fl. and succeeding branches: fls. terminal; 

 ovary globular, naked or nearly so; sepals usually in 2 

 rows, the outer ones broader and short, the inner ones 

 larger and more petal-hke; petals distinct, narrow 

 toward the base; stamens distinct, erect, borne on the 

 disk; stigmas 5, erect, white. Closely related to Rhii> 

 salis, with which as Hariota it is often united, as it was 

 in the Cyclo. of Amer. Hort. — Some 6 or 7 species of 

 Hariota have been described, but most of these are 

 true species of Rhipsalis; 2 were recognized by K. 

 Schumann. The following is in cult. Hariota, DC. 

 (1834) is a homonym of Hariota, Allans. (1763), and 

 hence the name Hatiora has been substituted. 



salicomioides, Brit. & Rose (Haribla salicornimdes, 

 DC. Rhipsalis salicomioides, Haw.). Plant upright, 

 reaching a height of IS in., richly branched: areoles 

 hardly setulose or lanate: sts. cereiform, with cylindi'ic 

 or oblong-elliptic joints; mature or fruiting branches 

 with vertieillate, club- or flask-shaped joints, with 

 slender base, all apparently, as well as the fls. and fr., 

 gro^\'ing from the tops of joints: fls. yellow, funnelform, 

 }/2in. long: berry small, whitish. Brazil. B.M. 2461. 



J. N. Rose. 



HAW, or HAWTHORN: Cratxgus. BLACK HAW: Viburnum 

 prunifolium. 



HAWKWEED : HieTacium. Various species of Crepis are known 

 as Hawksbeard. 



HAWORTHIA (A. H. Haworth, an English botanist 

 of the beginning of the last century, who wrote much 

 and well on succulents). Liliacese, tribe Aloinex. 

 Acaulescent or shortly caulescent small succulents. 



Leaves usually small, crowded on the st. or in mostly 

 somewhat elongated rosettes: fls. white, green or rosy- 

 striped, tubular with somewhat irregular recurving 

 limb and included style and stamens; segms. of perianth 

 6, oblong, nearly equal ; stamens 6, shorter than perianth ; 

 ovary sessile, 3-angled: fr. a loculicidaUy 3-valved caps., 

 bearing many compressed angled seeds. S. Afr. Mono- 

 graph by Berger in Engler, Das Pflanzenreich, hft. 

 33, 1908. — Species 60, occurring in S. Afr. They are 

 interesting condensed or cespitose plants with thick and 

 succulent keeled often tuberculate and sometimes 

 toothed Ivs., and fls. in simple or panicled racemes. 



Cultivation, propagation and decorative uses as for 

 Aloe, under which, with Apicra and Gasteria, the 

 species were formerly placed. See Aloe and Succulents. 



albicans, 13. 

 altilinea, 22. 

 arachnoides, 24. 

 argyrostigma, 11. 

 aristata, 22. 

 asperula, 17. 

 attenuata, 11. 

 cffspitosa, 8. 

 clariperla, 11. 

 coarctata, 6. 

 concava, 29. 

 concinna, 1. 

 corallina, 7. 

 cuspidata, 23. 

 cjTnbiformis, 20. 

 erecta, 7. 

 expansa, 4. 

 fasciata, 5, S. 

 granata, 7. 



INDEX. 



hybrida, 3. 

 indurata, 1. 

 inflexa, 14. 

 l^vis, 13. 

 limpida, 22. 

 major, 2, 7. 

 margaritifera, 7. 

 minima, 7. 

 minor, 5, 7. 

 mirabilis, 16. 

 mitcronata, 22. 

 mutica, IS. 

 obtusa, 20. 

 parva, 14. 

 perviridis, 9. 

 polyphylla. 22. 

 pseudorigida, 2. 

 pseudotortuosa, 1. 

 radula, 9, 10, 12. 



Tamifera, 13. 

 recurva, 15. 

 Reinwardtii, 5, 6. 

 reticulata, 21. 

 retusa, IS. 

 rigida, 4. 

 rugosa, 9. 

 semimargaritifera, 

 subalbicans, 7. 

 suhfasciata, 11. 

 subrigitia, 2. 

 subulata, 10. 

 t«sselata, 14. 

 torquata, 1. 

 tortella, 2. 

 tortuosa. 2. 

 turgida. 19. 

 virescens, 13. 

 viscosa, 1. 



var. indurata (H. indurata, Haw., Albe indurata, R. & 

 S., .4. viscosa indurata, Salm), Salm, Aloe §3, f. 36; a 

 small form with more spreading Ivs. in somewhat spiral 

 ranks, var. pseudotortuSsa, Baker (//. pseudolorludsa, 

 Haw., Aloe pseudotortuosa, Salm, A. subtortuosa, R. & 

 S., Apacra tortuosa, WiUd.), Salm, Aloe §3, f. 5; a dwarf 

 form with straight-ranked, longer, more spreading, 

 nearly smooth Ivs., var. concinna, Baker (H. concinna. 

 Haw., Aloe concinna, R. & S., A. nscdsa major, Salm), 

 Sahn, Aloe §3, f. 4. Berger 24; and a taller form with 

 more or less spiral ranks of outcurving Ivs. 2 in. long, 

 var. torquata, Baker (//. torquata. Haw., Aide torquata, 

 Salm), Sakn, Aloe §3, f. 6. 



2. tortudsa. Haw. {Aloe tortuosa, Haw.). St. 4-5 in., 

 more or less clustered: Ivs. dull green, J^xlH ii-i 

 ascending in 3 irregularly oblique crowded ranks, 

 somewhat rough on the back: infl. about 1 ft. high, 

 slender, occasionally forked; fls. rosy-lined. Cape. 

 Sahn, Aloe §4, f. 2. B.M. 1337. Berger 25.— Varies in 

 a form with fleshier Ivs., 2 in. long, rough on both 

 faces, var. pseudorigida, Berger (H. subrigida, Baker, 

 Albe pseudorigida, Salm, .4. subrigida, R. & S., Apicra 

 pseudorigida. Haw., ApHcra rigida, Willd.), Salm, 



A. Foliage crowded on an elongated st. (aspect of Apicra). 



B. Li's, never coarsely white-dotted. 



c. The Ivs. 3-ranked, concave. 



1 visc6sa. Haw. (Albe viscosa, Linn. A. Iriangul&ris, 



Lam. Apicra idscbsa, Willd.). St. with Ivs. lJ4x4-8 



in., occasionally forked, clustered: Ivs. dull green, 



J,^ X 1 in., appressed with spreading tips, minutely 



scabrous: infl. 1 ft. high, slender and curving, simple; 



fls. green-lined. Cape. DC, PI. Gr. 16. B.M. 814. 



Salm, Aloe §3, f. 3.— The type, with straight ranks of 



Ivs., varies into a form with larger less-crowded Ivs., 



1787. Haworthia Reinwardtii. ( X ' 2) 



Aloe §4, f. 1. Jacq. Fragm. 108; a still larger, greener, 

 rougher, and more succulent form, var. major, Berger 

 (.4. pseiulorlgida major, Salm), Salm, Aloe §4, f. 2^; 

 and a smaller form with the more spirally arranged Ivs. 

 smooth above, var. tortella. Baker (H. tortella. Haw.). 



CC. The Irs. more or less irregularly 5-ranked, spreading. 



3. hybrida. Haw. (Albe hybrida, Salm). St. with Ivs. 

 2>^x4-5 in., more or less cespitose: Ivs. dull green, 

 ^xiy^ in., plump, wTinkled above and roughened: 

 infl. 2 'ft. high, branched; fls. brown or rosy lined. 

 Cape (?). Sakn, Aloe §4, f. 4.— Po-ssibly a hybrid 

 between the preceding and following species. 



4. rigida. Haw. (H. expdnsa major. Haw. Albe 

 rigida, DC. .4. cylindrica rigida. Lam. Ap\cra ejcpdnsa, 

 Willd.). St. with Ivs. 4 x 3-5 in., more or less cespitose: 

 Ivs. green or browning or rosy-margined, 52-/4 x2-2}'^ 

 in., concave, wrinkled beneath : infl. 2 ft. high, more or 

 less branched; fls. striped with brownish green. Cape. 

 Sahn, Aloe §4, f. 3. DC, PI. Gr. 62. Berger 26. L.B.C. 

 15:1430. — Varies into a smaller form with slightly glos.sy, 

 smoother, very spreading Ivs., var. expansa, Baker (H. 



