CONTRIBUTIONS TO BOTANY. 
263 
emarginatis, et mucronulatis, utrinque pubescentibus, serrato- 
dentatis, a medio basin versus integris, et bine in petiolum 
brevem canaliculatum cuneatis, in ramulis novellis prsestanti- 
bus, eito caducis ; floribus 4-6 fasciculatis, parvulis, e tuber- 
culo albido-tomentoso ortis ; calyce pedunculo sequilongo, 
tubo cylindraceo, imo inflate, medio constricto, limbi laciniis 
5 longiuscubs, acutis, reflexis, staminibus laeiniis dimidio 
brevioribus, erectis, stylo exserto stamina attingente. — Chile. 
— V. s. in herb, meo ; Valdivia (Bridges, 141); Valparaiso 
(Cuming, 705) ; — in herb. Hook. ; Concepcion (Beechey). 
This is a very distinct species, with stout and very straight 
branchlets, 8 to 18 inches long, or perhaps longer, quite terete, 
pruinose, or sparsely tomentose ; the primary spines, frequently 
ternate and very spreading, are scarcely longer than the inter- 
nodes, which, together with their very divaricate spinelets, give 
to the branches an interi’upted spicate appearance. The ramal 
internodes are | inch apart, the primary spines are 1 inch long, 
the secondary spines, are | inch long and 2 lines apart, and 
the tertiary spinelets are 2 to 3 lines long; the leaves are 
suborbicular, broadly emarginate at the summit, and mucronate 
with 2 or 3 teeth on each margin : the petiole is seated in the 
sinus of a bidentate stipule. The flowers are numerous, and 
densely aggregated, owing to the very close proximity of the 
axils, so that the entire branch appears a full-flowered spike : 
the pedicels are somewhat more than a line long, the cylindrical 
tube of the calyx is li to 2 lines, and its segments f to 1 line 
in length, its diameter being ^ or | line ; the flowers are pale 
and membranaceous*. 
16. Colletia aciculata, n. sp. ; — ramosissima, intricatissime spi- 
nulosa, viridis, breviter et rigide pilosula ; ramis rectis, sub- 
teretibus, ramulis decussatis, crebre spinosis, spinis iteratim 
spinulosis, spinulis brevibus, sulcato-striatellis, acute pun- 
gentibus ; foliis in ramulis novellis minimis, obovatis, pauci- 
dentatis, glabris, viridibus, imo in petiolum brevem cuneatis, 
caducis ; floribus infra spinulas superiores fasciculatis, et bine 
spicam cylindricam oblongam multifloram mentientihus, pe- 
dicello calyce breviore, calycis tubo late cylindrico, submem- 
branaceo, imo inflate, carnosulo, limbi laciniis 5 acutis, sub- 
reflexis, staminibus 5 exsertis. — Peruvia : v. s. in herb. Mus. 
Paris, sine loco aut designatione. No. 901 (sub. nom. “ Be- 
tama,” Dombey) ; Tarma (Dombey, ‘Wern. Naqui^^). 
Three specimens of this plant exist in the Paris Museum ; 
the first, in flower, and the second, in fruit, are in the Jus- 
* This plant is represented in this work, Plate 36 b. 
