RHUS. ANACARDIACEÆ (AUCT. ENGLER). 437 
91. Rh. oxyacantha (Cay. Ic. et descr., III, 36 [1794]); glabra, 
ramulis patentibus spinescentibus, foliiferis sæpe abbreviatis; foliis 
utrinque glabris, subtus pallidioribus, breviter petiolatis, foliolis late- 
ralibus intermedio sæpe duplo brevioribus omnibus sessilibus oblon- 
gis, apice obtusiusculis basi acutis, margine integris vel ssepius hinc 
inde vel toto margine irregulariter obtuse dentatis, nervis lateralibus 
tenuibus subtus paullum prominulis; paniculis brevibus, ramosis, 
bracteolis linearibus obtusis; calycis glabri segmentis ovatis; petalis 
oblongis 4-5-plo longioribus; staminibus filiformibus dimidium peta- 
lorum superantibus, drupis subglobosis rubescentibus nitidis majus- 
eulis, pyrena valde compressa. — Schousb. Act. soc. hafn. ex DC. 
Prodr., II, 71. — Rh. oxyacanthoides Dum. Cours bot. eult., VI, 
p. 662 (1802); Reboud in Bull. Soc. bot. de Fr., XIV, 31. — Rh. 
dioica Brouss. in Willd. Enum., 325; DC. Prodr., IL, 71; Parlat. Fl. 
ital., V, 391. — Rh. cratægiformis Pers. Ench., I, 326. — Rh. zizy- 
phina Tineo Pug. sic., I, 8; Schrank in Flora, 1819, p. 384; DC. 
Prodr., II, 72. — Rhamnus tripartita Ucria.-Rhus et Zizyphus tripar- 
tita Rom. et Schult. Syst., V, 342; VI, 663. 
- Frutex humilis, ramulis spinescentibus 2-5 cm. longis. Foliorum 
petiolus 0,5-1 em. longus, foliola lateralia 1-1,5 cm. longa, 6-8 mm. 
lata, intermedium duplo longius. Panicula 1-2 em. longa, ramulis fere 
l em., pedicellis 1-2 mm. longis. Calycis segmenta 0,5 mm. longa. 
Petala 2 mm. longa, 1 mm. lata. Drupæ 6-8 mm. diametientes, 
pyrena 5-6 mm. lata. 
Cap Verden, in insula Sol (Bolle), insule canarienses (Bolle); 
Maroeco (Broussonet in herb. Willd., n. 6002); Keira vers, alt. 900 m. 
(Balansa in herb. Cosson); Marocco meridionalis, Sceksaoua (Hook. 
et Ball in herb. Cosson). Algeria, Biskra (Balansa Pl. d'Alg., n. 1037, 
Schmitt in Fragm. Fl. Alg. exsice., n. 220); Constantine, Mechta 
El-Nehor (olim Calda) (Reboud in herb. Coss.); Laghouat (Reboud), 
Béni-Souik (Cosson); Bou-Saadu (Reboud in herb Coss.); Oran, Djebel- 
Nzizah pr. Arba-el Tahtani (Cosson). Frequens in montibus tripoli- 
tanis, pr. Tripolin orientem versus (Lorent), inter Tripolin et Leptin 
(G. A. Krauss in herb. Berol.); Uadi Tirhit (Duveyrier), Uadi Sese- 
mahl pr. Misda (Rohlfs fide P. Archers.), Beni Ulid (Rohlfs, Stecker 
fide Aschers.), Uadi Ghobin, Uadi Nefeid (Nachtigal fide Aschers.). 
Fesan, Hammada-el-homra (Barth fide Aschers.), In-Esan in septen- 
trione loci Rhat (Duveyrier in herb. Cosson), in valle Egeri, 24 */, 91. 
bor. (Barth fide Aschers.), in monte Tademait atque inter Rhat et 
In-Ssala (Duveyrier); Cyrenaica (Pacho in herb. Deless.); Tunis, insula. 
