CONTRIBUTIONS TO BOTANY. 
257 
their base. Its leaves are very caducous, oblong, acute, with a 
mucronate apex, more obtuse at the base, fleshy, obsoletely 3- 
uerved, toothed on the margin, quite glabrous, 2 lines long, 
1 line broad, on a slender petiole of 1 line in length ; this springs 
out of a sinus of a bidentate acute stipule, also caducous. The 
flowers are smaller than in any of the preceding species, and 
are of a whitish colour : the length of the tube is line, of its 
reflected segments 1 line, its diameter 1 line. The annular peri- 
gynous disk is green, and situated near the base of the tube ; 
the filaments are one-fourth of the length of the segments, and 
are reflected within the mouth; the style is exserted. The 
capsule is 2^ lines in diameter, 3-lobed, and seated in the free 
cupular persistent base of the calyx*. 
7. Colletia Weddelliana, n. sp. ; — intricato-spinosa, ramulis nodos 
versus compressis, ochraceo- vel glauco-pruinosis et granulato- 
punctatis, spinis teretibus, imo compressis, substriatis, iterum- 
que spinulosis, apice glanduloso-pungentibus ; foliis parvis, 
caducissimis, lanceolato-oblongis, utrinque acutis, integris vel 
summo dentatis, pallide glaucis, crassis, enerviis, convexis, 
rachi superne sulcata, inferne prominula, petiolo brevissimo, 
canaliculate, deflexo ; floribus paucis, fasciculatis, e tuberculo 
squamoso majusculo puberulo proficiscentibus ; calyce cylin- 
drico, lO-nervi, rubello, medio non constricto, imo carnosulo, 
limbi laciniis 5 reflexis, 3-nerviis, apice callosis, staminibus 5 
in sinubus fere sessilibus, disco annulari crenulato, stylo in- 
cluso. — Bolivia, in locis aridis petrosis. Puna ad Lac. Titicaca, 
altit. 12,000 ped. — v. s. in herb. Mus. Paris (Weddell, 4391). 
This species much resembles C. atrox in general aspect, but 
its spines are not so broad and compressed at their Base, and 
are of a more glaucous-yellow hue ; the form of the calyx corre- 
sponds more with that of C. spinosa in being broad and little 
constricted. The spines vary in length from 6 to 9 lines, are 
greatly divaricated or nearly patent, and are decussating, the 
internodes being 4 to 6 lines apart. The leaves are 3 lines long, 
Ij line broad, thick, coriaceous, convex and channelled above, 
concave below, with revolute toothed margins ; each pedicel is 
1 line long; the length of the calyx (including its reflected 
segments, of nearly 1 line) is 3| lines, and its diameter li linef. 
8. Colletia Kunthiana. C. spinosa, H. B. K. Gen. Sp. vii. 59 
(non Lam.). — Fruticosa, 1-2-orgyalis, ramosissima, et intri- 
cato-spinosa, ramulis obsolete striatis, fusco-brunneis, ad- 
presse hirtellis, ad nodos compressis, spinis subbrevibus, 
* This species is represented in Plate 34 e of this work, 
t A drawing of this plant is given in Plate 34 F. 
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