EUPHORBIA 



EUPHORBIA 



563 



CC. branches fleshy, a spine on each side of every 

 leaf or leaf-scar, in a few the leaf transformed 

 into a third thorn between them. 



D. Podaria (the projections bearing leaves and spines) 

 distinct: branches cylindrical or obsoletely 

 angled. 



8. splendens, Bojer. CROWN OF THORNS. Fig. 798. 

 Stems 3-4 ft. long, %-l in. thick, covered with stout 

 spines almost an inch long, somewhat twining : 

 branches few : Ivs. few, on the young growth, obovate 

 to oblong-spatulate, thin, bright green, 1-2 in. long; in- 

 volucres in long-peduncled dichotomous cym'es, near the 

 ends of the branches, each closely subtended by two 

 broadly ovate bright red bracts, filaments forked. Mada- 

 gascar, .flowering all the year, but mostly in winter. B.M. 

 2902. L. B.C. 18: 1713. -Coolhouse plant. The red bracts, 

 with green leaves on the sinuous spiny stems, are strik- 

 ing. It can be trained into ornamental forms. 



9. neriifdlia, Linn. Arborescent or shrubby: stem 

 obtusely 5-angled, 3-7 ft. or more high: the small mam- 

 miform podaria in rows, with short, dark colored, di- 

 vergent spines : branches mimerous, bearing obovate- 

 oblong, obtuse, thick Ivs., 3-5 in. long at the summit : 

 small, sessile cymes of greenish involucres in the up- 

 per axils. June, July. E. Indies. Large Ivs. persistent 

 from autumn to spring. Cristate forms are in cult. 



10. drupifera, Schum. & Thorn. (E. grandifdlia, Haw. ) . 

 Arborescent: stem terete : branches obsoletely 4-5- 

 angled ; spines small : Ivs. terminal, obovate-cuneate, 

 obtuse or retuse, 5-8 in. long: small cymes axillary, pe- 

 duncled: capsule drupaceous. Guinea. 



bert's Deutsche Garten Mag. 46:251. -A striking plant, 

 with the widest wings and longest spines of all. 



14. Hermentiana, Lem. A shrub, 3-4 ft. high, with 

 many non-jointed, erect branches, their edges repand- 

 dentate and broad, slightly concave faces, white-mar- 



796. Euphorbia fulgens (X %). 



11. mamilldsa, Lem. Low, cespitose: branches less 

 than an inch in diam. : podaria elongated, conical, in 5 

 spiral rows: Ivs. and spines small, soon deciduous. 



DD. Podaria confluent into ribs: branches more or less 



acutely wing-angled. 

 E. Growths or branches S-angled (sometimes 4-angled, 



especially on the main axis, and in E.alcicornis 



flat). 



12. antiqudrum, Linn. (E. Havanensis, Hort.? E. 

 Idctea, Hort.?). Shrub, 8-10 ft. high : branches erect- 

 spreading, jointed; angles compressed, repand dentate, 

 the teeth 1 in. long; spines 1-3 lines long: Ivs. minute, 

 ovate -spatulate or rotund. India, and naturalized in 

 other places, notably the W. Indies, where it is used for 

 hedges. Cristate forms are in the trade, as E. lactea 

 monstrosa ? and E. Havanensis cristata. 



13. grandicdrnis, Goebel. Fruticose: branches 3 in. 

 wide; angles broadly winged, deeply lobed and sinuate; 

 spines large, 1-2 in. long, light colored. S. Afr. Neu- 



797. Euphorbia pulcherrima (X 1-5). 



bled when young ; spines 2-2% lines long : Ivs. lanceo- 

 late or lance-spatulate, 3-5 in. long. Gabon river, W. 

 Afr. Considered one of the best. 



15. lactea, Haw. A shrub: branches erect; faces 1-3 

 in. wide, plano-convex, yellow and green striped ; edges 

 subcompressed, repand dentate; spines 2-3 lines long 

 East Indies. 



16. grandidens, Haw. Tree, 20-30 ft. high and as 

 much as 3 ft. in diam. : branches slender, %-% in. 

 wide, numerous, erect-spreading, making a rounded 

 head in old plants ; faces almost plane ; angles deeply 

 lobed-dentate ; spines 3-5 lines long, slender: Ivs. very 

 small, triangular. S.Afr. G.C. II. 26:721. -E. alcicornis, 

 Hort., is probably a form of this with flat branches. 



17. triangularis, Hort. Par. Stem 3-7 ft, high, trian- 

 gular: numerous branches erect, with convex faces dark 

 green ; the winged angles sharply toothed and short- 

 spined. S. Afr. 



EE. Growths or branches with 4 or more angles or 

 rarely 3-angled. 



18. Canari6nsis, Linn. Shrub or tree, 12-20 ft. high, 

 with many 4-6-angled suberect 



branches, as much as 3 in. thick, 

 from the base ; angles subentire; 

 spines 2 lines long, black : Ivs. al- 

 most none. Canary Islands. Gn. 

 53, p. 46. G.C. 11.20:629. 



19. virdsa, Willd. (E. cceruUs- 

 cens, Haw.). A shrub as much as 

 15 ft.high,much branched :branches 

 45- or sometimes 3-angled, 1 in. 

 thick, ascending ; angles lobed ; 

 epidermis bluish; spines strong, 

 4-5 lines long, black. S. Afr. 



20. Abyssinica, Rausch. Stem 

 robust, 30-40 ft. high, 9-14 ft. in 

 greenhouses : branches few, 4-6 

 in. in diam., dark green; angles 

 5-8, obtuse but prominent; edges 

 undulate; spines short, re- 

 curved : Ivs. minute, spat- 

 ulate. Abyssinia. Gn. 52, 



p. 106. G.'C. III. 20:497.- 

 Much resembles C'ereus 

 Peruvianus. 



21. Pf6rsdorffii, Hort. 

 Trunk round, l%-2% in. 

 thick, 9-ribbed, much 

 branched when old ; spines 

 large, 4-8 lines long. 



22. candelabrum, Trem. & Klotzch. Tree, 20-30 ft. 

 high, with ahead 60-80 ft. in circumference: trunk short 

 and thick, densely branched : branches 3-4-angled ; 



Euphorbia 

 splendens (X %). 



