HAWORTHIA 



9. margaritifera, Haw. {H. mtr/or. Dural. Aide mar- 

 garitifera , Burra. ) . Lvs. turgid, spreading, merely acute, 

 both faces with scattered coarse white tubercles, which 

 often turn green on the upper surface. P.U. 57. Varies 

 into several named forms. 



DD. The h'S. less conspicitoitsli/ ichite-tuherculaie. 



10. rugdsa, Bak.( J^Wcriig'd.sn, Salm-Dyck. B.Bddula 

 asperior). Lvs. long attenuate, spreading, plano-convex, 

 both faces with irregularly placed, rather coarse green- 

 ish tubercles. 



1022 Haworthia Reinwardtu 



11. subulita, Bak. (Aide sttbuUta, Salm-Dyck). Like 

 the preceding, but the scattered or mgosely confluent 

 tubercles very small, whitish. 



12. Eidula, Haw. (Aide Bddula, Jacq. Ap\cm ad- 

 (ZH?n, Willd.). Lvs. shorter, the white tubercles finer. 

 Cape. 



!.•!. hybrida, Haw. Lvs. short, more turgid, the upper 

 face somewhat rugose, the lower with scattered green 

 tubercles. Cape? 



cc. Shape of lvs. ovate to deltoid, succulent, not tuber- 

 cnlate, spreading, the rosette often somewhat 

 elongated. 



U. teaaellkta„B.a,w. (Aide iessellita,Schu\t.i.). Lvs. 

 acute or acuminate, setosely denticulate, scabrous be- 

 neath, the smooth upper surface with pale lines anas- 

 tomosing in squares. 



15. reciirva, Haw. (Aide reciirva. Haw. ApXcra re- 

 cw»-i'n,Willd.); Lvs. entire, scabrous beneath, thesmooth 

 upper surface longitudinally jiale striate. B.M. 1353. 



16. cymtiif6rmis, II:i\v.( //. ...i,, •I'lru. Haw. Aide cymbl- 

 Mrmis, Haw. J ..„,„/„, /../,.i . Srlmul. Aplcra cijtnbw- 

 tt;m,Willd.|. Ly>, I 111 in-, -ill th, rather obtuse, longi- 

 tudinally striate. B.M. siii. 



CCC. Shape of lvs. cuncatcly prismatic, pellucid. 



D. Tlie lvs. erect, obliquely truncate, with deltoid, pale- 



striate apex. 



17. mirAbilia, Haw. (Aide viirdbilis, Haw. Aplcra 

 miriibilis, Willd.). Lvs. ciliate-denticulate on margin 

 .and keel, sparingly tuberculate beneath. B.M. 1354. 



18. aapSrula, Haw. (Aide aspirula, Schult. f.). Lvs. 

 entire, finely scabrous. 



19. rettiaa, Haw. (Aide rethsa, Linn. Aplcra retitsa, 

 Willd. Calevdla retf<sa,iledic.). Lvs. entire, smooth. 

 B.M. 455. 



DD. The lvs. erecto-spreading, pointed, smooth. 



20. cuspidata, Haw. (^JdecKspJddto, Schult. f.). Lvs. 

 stout, rather concave, entire, nearly erect, the setulose 

 apex obscurely longitudinally or reticulately striate and 

 sometimes truncate, but very obliquely so. 



21. tiirgida, Haw. (Aide tiirgida, Schult. f.). Lvs. 

 small, spreading, very turgid, acute, entire, longitudi- 

 nally striate. 



22. reticulata, Haw. (4 Jdere(ic«M/a, Haw. A.pumila, 

 Linn. A. herbAcea, DC. A. arachnoldes reticulAta. 

 Aplcra reticulAta, Willd.). Lvs. as in the last, or 

 slightly ciliate on the angles, the striations anastomo- 

 sing. B.M. 1315. L.B.C. 14:1,354. 



23. altilinea, Haw. ur. ., . 

 H. aristdta. Haw. .1 / . ■ . 



tire. 



IT. limpida and 

 It. f.). Lvs. en- 

 triate. 



24. arachnoldes, lla\\ .' I '^ 'n>i„,n.i,lea,^\\l. Aplcra 

 arachnoldes, Wilkl. Cahrdiii arurhuoldea. Medic). 

 Lvs. more flattened-triquetrous, aristately pointed, the 

 angles ciliate-toothed. B.M. 756. 



BE. Margin and keel of lvs. horny-bordered. 



25. albicans. Haw. (ff. Icrvis, Haw. Aide IcevigAta, 



Schult. ^4.(i/^i('fi)is, Haw. A.marginAta,\j&m. Aplcra 



albicans, Willil.l. Lvs. broad, 3-sided, acute, entire, 



few dorsal tubercles, white-bordered. 



William Trelease. 



smooth oi 

 B.M. 1452 



HAWTHORN. See Cratagus. 

 HAWTHOEN, EAST INDIAN. Eaphiolepl 





HAZAKDIA (Barclay Hazard, Californian botanist). 

 Co>,f I fix I iir. This includes a small Californian subshrub, 

 witlisilvL-ry leaves and peculiar, not pretty, heads of fis., 

 liorue in August. It is suitable for rockeries and bed- 

 ding out, but there are better woolly-leaved plants in 

 cult. The genus has about 4 species of stout, tomentose, 

 deciduous shrubs of the islands off the coast of Calif.: 

 heads wbite-tomentose, numerous, in large cymose pani- 

 cles, which terminate the branches; rays 5-8, neuti-al, 

 very short, ligulate or irregularly 5-toothed or lobed, 

 pale yellow changing to brownish purple. In 1887 E. L. 

 Greene made this new genus, remarking that it differs 

 from Diplostephium mainly in habit, the paucity, re- 

 duced size, and different color of its rays. It also lacks 

 the tuft of hairs characteristic of the style-tips of Co- 

 rethrogyne. 



det6nsa, E. L. Greene. (Corethrdgyne detdnsa, Greene). 

 Lvs. of firm texture, 3-5 in. long, obovate-oblong, 

 coarsely serrate: upper^urface of older lvs. partly di- 

 vested of the white tomentjum which covers all other 

 parts of the plant. p. Fkanceschi and W. M. 



HAZEL. See Corylus. CJiilean Haze) is Gevuina 



HEAL-ALL. Brunella. 



EEABT'S EASE. Old English name for Pansy, Viola 



HEARTSEED or BALLOON VINE. Cardiospermum. 



HEATH, HEATHER. The common Heather of Old 

 World literature is a hardy plant, Calluna vulgaris. 

 The greenhouse Heaths are from the Cape of Good 

 Hope and Europe, and belong to the genus Erica. For 

 St. Dabeoc's Heatb, see Daba'-cia. 



Heating. 



HEBECLtNIUM. All refer 





HfiCHTIA (J. G. H. Hecht, who died in 1837). Bro- 

 meliAcew. A genus of 15 species of Mexican succulent 

 plants, one of which is perh.aps cult, in a very few fan- 

 ciers' collections of tender plants for its dense rosettes 

 of recurved spiny lvs., which are purple above from the 

 middle to the tip and silvery beneath. The genus is distin- 

 guished by having dicecious fls. The fls. have no decora- 

 tive value, being one-third of an inch across, white, in 



