ASCLEPIADE.E. VIII. TROMOTBICHE. IX. ORBEA. 



119 



hairy ; segments of exterior corona, or ligulse, obtuse, obso- 

 letely tridentate ; horns subulate, connivent : outer branches of 

 inner corona ovate, obtuse, fj . S. Native of the Cape of 

 Good Hope. Stapelia paniculata, Jacq. stap. t. 61. Corolla of 

 a livid green colour outside, glabrous, brownish purple, and 

 beset with violaceous papillae inside ; hairs white. 



Panicled Tridentea. Fl. June, Sept. Clt. 1805. Shrub. 



Cult. For culture and propagation see Stapelia, p. 117. 



VIII. TROMOTRICHE (rpo/ioc, Iromos, tremor; 0pi4 

 rpi\os, thrix, trickot, a hair ; in reference to die cilia of the 

 corolla being tremulous.) Haw. syn. p. 36. Stapelia species 

 of authors. 



Lis. STST. Pentdndria, Digynia. Corolla smooth, revolute, 

 ciliated with tremulous spatulate hairs. Segments of exterior 

 corona, or ligulae, connate at the base, horizontal, cuneate-rhom- 

 boid and serrated ; those of the inner corona unequally bifid ; 

 inner branch recurved, longer and slenderer than the other, gra- 

 dually thickened to the apex, whence it appears like a stigma. 

 Habit almost of the first secron of Stapelia ; but the branches 

 are naked, and very glaucous, or rather pruinose, erectly decum- 

 bent ; the teeth distant, thick, horizontal, or a little recurved. 



1 T. KEVOLU'TA (Haw. .syn. p. 36.) branches tetragonal, 

 glaucous, erect ; corolla glabrous ; but the segments are ciliated 

 with spatulate glands, acute, and revolute ; ligulse quadrate, ob- 

 cuneated and retuse at top : outer branch of inner corona tooth- 

 formed, acute. ^ . S. Native of the Cape of Good Hope, in 

 Karro, under bushes. Stapelia revoluta, Mass. stap. p. 12. t. 

 10. Sims, bot. mag. 724. Branches floriferous at top. Pedi- 

 cels solitary. Corolla pale, violaceous, ex Willd., greenish 

 yellow outside, and purplish inside, ex Mass ; dirty dark red, 

 with a pale circle at the base of the lobes, ex Haw. suppl. pi. 

 succ. p. 1 1 . 



.Reco/ute-flowered Troir.otriche. Fl. Ju. Sept. Clt. 1790. 

 Shrub 1 foot. 



2 T. GLAC'CA (Haw. syn. p. 37.) branches tetragonal, very 

 gl.tucous ; corolla glabrous ; segments ovate, acute, revolute, 

 fringed with clavate glands ; ligulae bi-tridentate at apex. fj . 

 S. Native of the Cape of Good Hope. Stapelia glauca, Jacq. 

 stap. t. 10. Willd. enum. p. 279. Very like T. revoluta, in the 

 mode of growth, colour, form, and corolla ; but differs from it 

 in the segments of the exterior corona being tridentate, ex 

 Willd Branches sometimes hexagonal, ex Jacq. Pedicels 

 aggregate at the tops of the branches. Corolla livid green 

 outside, and striated : blood -coloured inside ; with a white 

 bottom ; ex Jacq. Lobes of outer corona obtuse, and a little 

 emarginate at the apex : therefore the plants of Jacquin and 

 Haworth are probably distinct. 



Glaucous Tromotriche. Fl.Ju. Nov. Clt. 1799. Sh. 1 to 2 feet. 



3 T. PRUIXOSA (Haw. syn. p. 37.) branches bluntly tetrago- 

 nal, erect, with recurved teeth ; corolla with flat, ovate, pilose, 

 or downy segments, the down appearing like powder; ligulae ser- 

 rated at top. ? fj . S. Native of the Cape of Good Hope, in the 

 dry regions of Namaqua Land, among bushes. Stapelia pruinosa, 

 Mass. stap. p. 24. t. 41. Corolla blackish, beset with white 

 adpressed hairs, ex Willd. Stems purplish. Flowers small, 

 solitary, twin, or tern, towards the tops of the branches, pur- 

 plish, ex Mass. Perhaps a species of Piardnthut. 



Prm'/Kwe-flowered Tromotriche. Fl. Ju. July. Clt. 1795. 

 Shrub 1| foot. 



4 T. OBIJQUA ; branches tetragonal, glaucous ? corolla gla- 

 brous ; segments ovate-acuminated, bent, obliquely ciliated 

 with clavate white or purple glands ; ligulae bidentate, acute. 



^. S. Native of the Cape of Good Hope. Stapelia obliqua, 

 Willd. enum. suppl. p. 13. Corolla dirty yellow, marked with 



confluent, violaceous spots. Exterior corona greenish yellow, 

 dotted at top, and furnished with a mark at the base. 



OWijttf-flowered Tromotriche. Fl. Ju. Sept. Clt. 1805! 

 Shrub 1| foot. 



5 T. FCSCA'TA (Haw. suppL pi. succ. p. 10.) branches tetra- 

 gonal, erectish, glaucous-green ; corolla glabrous ; leaflets of 

 outer corona 2-3-toothed ; shorter branches of inner corona ob- 

 tuse. Tj . S. Native of the Cape of Good Hope. T. glauca, (3, 

 Haw. syn. p. 37. Stapelia fuscata, Jacq. stap. t. 55. Flowers 

 brownish purple. Corolla pale at bottom, striated transversely 

 with red ; ciliated at top, with clavate, wine-coloured glands. 

 Ligulaj dark brown. 



ZfrornJ*A-flowered Tromotriche. Fl. Ju. Nov. Clt. 1814. 

 Shrub 5 to 1 foot. 



Cult. For culture and propagation see Stapelia, p. 117. 



IX. O'RBEA (from orbit, an orb; the orb in the centre of 

 the flower is very large and elevated.) Haw. syn. p. 38. 

 Stapelia species of authors. 



Lix. STST. Pentdndria, Digynia. Corolla 5-cleft, starry, the 

 whole of the inside corrugated, furnished with a large, elevated 

 orb in the centre. Segments of outer corona, or ligulae, 

 long, spreading, bi or tridendate at the apex ; those of the inner 

 corona unequally bifid ; the inner branch recurved, longer than 

 the outer one, style-formed, clavate, and stigma-formed at the 

 apex. Habit of the species of Poddnthet ; but the branches 

 are more robust, and less effuse ; and, when old, become de- 

 cumbent and creeping : the teeth are smaller, and horizontal, not 

 ascending. 



1 O. MACULOSA (Haw. syn. 37.) corolla smooth, ciliated ; 

 ligulae tridentate ; orb convex, downy, ex Haw. >j . S. Native 

 of the Cape of Good Hope. Stapelia maculosa, Jacq. stap. t. 

 31. Willd. enum. p. 283. Sims, bot. mag. 1833. Stap. roixta, 

 Donn. hort. cant. Segments of corolla ovate, acute, dirty 

 yellow, red at the apex and edges, almost covered by confluent, 

 rufous, large spots. Orb waved, elevated, but small for the size 

 of the flower. Ligulae 2-3-toothed at top, brownish grey, paie 

 at top, and marked by a large, distinct, brown spot, ex Haw. 



Spofterf-flowered Orbea. Fl. Ju. Sept. Clt. 1804. Shrub 

 1 foot. 



2 O. MIXTA (Haw. syn. p. 38.) corolla glabrous, with ovate, 

 acuminated, wrinkled segments, an elevated, papillose orb, and 

 bifid ligulae. 1j . S. Native of the Cape of Good Hope. 

 Stapelia mixta, Mass. stap. p. 23. t. 38. Flowers drooping, of 

 an obscure violaceous colour, wrinkled with transverse yellow 

 stripes, and a yellow orb, beset with brown papilla. Very nearly 

 allied to O. cariegdta ; but differs in the form of the teeth of 

 the branches, and in the flowers being twice the size, in the acu- 

 minated segments, in the elevated, papillose orb, &c. 



Mixed Orbea. Fl. Ju. Sept. Clt. 1800. Shrub 1 foot. 



3 O. QCIXQUEXE'RVIS (Haw. syn. p. 38.) corolla glabrous, ? 

 5-nerved on both sides ; segments roundish elliptic ; ligulae 

 tridentate, middle tooth small ; branches spotted with brown. 



J? . S. Native of the Cape of Good Hope. Stapelia quinque- 

 nervis, Rcem. et Schultes, syst. 6. p. 37. Larger than O. 

 taiiegata. Corolline segments sulphur-coloured, less spotted 

 than in O. birulca; but having brown spots on both surfaces 

 in certain places ; and the corolla, and exterior corona, are more 

 deeply cleft than in O. bisulca. Ligulae yellow, having a blood- 

 coloured spot at the base, but with distinct brownish dots at the 

 apex. 



Fne-nerved-&owered Orbea. Fl. Ju. Sept. Clt. 1800. 

 Shrub 1 foot. 



4 O. BISU'LCA (Haw. syn. p. 39.) corolla glabrous ; orb large ; 

 ligulae emarginate ; branches thick, green. *j . S. Native of 



