99 
JENKINSONLA. tetragona. 
Square-stalked JenJcinsonia. 
J. tetragona, pedunculis bifloris, foliis cordato-reni- 
formibus quinquelobis dentatis hirsutis carnosis ; 
junioribus zonatis, ramis tetragonis carnosis, corol- 
lis 4 raro 5-petalis. 
Pelargonium tetragonum. JVillden. sp. pi. 3. p. 669. 
Pers. syn. 2. p. 231. Hort. Kew, ed. 2. v. 4. p. 
173. LHMt. ger. t. 23. Botan. maga%. 136. 
DC. pi. grass. 96. 
Geranium tetragonum. Andrews s geran. c. ic. 
Geranium trigonum. Scop. del. 1. p. 12. t. 5. 
Stem shrubby, succulent, much branched; branches 
succulent, obtusely 4-sided, or sometimes 3-sided, 
jointed, smooth and glossy, of a bright green colour; 
when quite young, slightly hairy. Leaves fleshy, cor- 
date or reniform, 5-lobed, toothed and fringed, thickly 
clothed with long villous hairs. Petioles nearly cylin- 
drical, or slightly flattened on the upper side, dilated 
at the base, and thinly clothed with short pellucid 
hairs. Stipules cordate or widely ovate, blunt. Pe- 
duncles obtusely angular, 2-flowered and covered with 
short pellucid hairs. Involucre of 4 lanceolate, taper- 
pointed, concave bractes. Calyjc o-cleft, segments un- 
equal, fringed, upper one widest, lanceolate, 3-nerved, 
erect, the others subulately linear, spreading. Necta- 
riferous tube nearly sesspe, more than twice the length 
of the calyx, slightly flattened on each side, and co- 
vered with short pellucid hairs. Petals 4, or rarely 5, 
the 2 upper ones much the largest, with a long unguis, 
