274 
CONTRIBUTIONS TO BOTANY. 
carnosulus, margine libero, crenulato. Ovarium oblongum, 
3-sulcatum, disco breviter immersum, 3-loculare ; ovula iu 
loculis solitaria, erecta ; stylus brevis ; stigma obtuse 3-lobum. 
Fmctus subglobosus, 3-sulcatus, in calycis cupulam valde 10- 
costatam discoque aucto adnatam semi-immersus, epicarpio 
crasso coriaceo persistente 3-valvato, endocarpio bine sece- 
dente, in coccis 3 elastice resilientibus, axin versus bivalvatim 
dehiscentibus, singulis monospermis. Semen Colletia. 
Suffrutices in Provinciis Argentinis prcecipue vigentes, rarius in 
Australasia, ramis valde patentibus, ramulis spinescentibus ; 
folia parvula, breviter petiolata, spathulato-oblonga, infra spinas 
orta, fasciculata, valde decidua : stipulse minutes, 2-lobee, laciniis 
subulatis : flores 2-3, fasciculati e turionibus spina brevioribus 
cum foliis prodeuntes •, pedunculo 1-^oro, nutante. 
1. Discaria Americana, Hook. Bot. Misc. i. 156. tab. 44 d. Con- 
daba spinosa, Spr. Syst. Cur. post. iv. 108. Condalia mega- 
potamica, Spr. Linn. xv. 473 ; — intricatissime spinosa, ramis 
tortuosis, ramubs compresso-teretibus, fere apbyllis, obsolete 
rigide pilosulis, spinis decussatim oppositis, iterumque spinu- 
losis, striatis, subulatis, apice calloso-pungentibus; foliis mi- 
nimis, oppositis, rarius 2-3 infra singulas spinas enatis, ob- 
longis, obtusis, serratis, imo in petiolum brevem cuneatis, 
reflexis, caducissimis : stipulis minimis, rudimentariis, rubris, 
obsolete 2-dentatis intus pilosulis; floribus 2-3, fasciculatis, 
nutantibus, e tuberculo sub spina stipula suffulto ortis ; 
calyce urceolato, limbo 5-fido, petalis 5, oblongis, concavis, 
unguiculatis, staminibus 5 petalis paulo longioribus, et laci- 
nus 3-plo brevioribus, erectis, filamentis brevibus, antberis 
ovatis, ovario oblongo, 3-sulcato, glabro, stylo calycis dimidio 
longitudinis, fructu 3-cocco, calycis cupula valde 10-sulcata 
suflfulto. — Portozuelo Prov. Cordovse (mihi lecta) ; in radicibus 
montium Prov. San Luiz et Cordova (Gillies). 
I cannot find in tbe Hookerian herbarium tbe typical plant 
upon wbicb Sir William Hooker founded this genus, nor any 
other approaching its characters; it was probably a unique 
specimen that remained in Gillies’s own collection, wbicb was 
afterwards sold and dispersed. In one of my journeys over 
the Pampas I found a plant in the same locality in which Gillies 
met with his, so that I may safely consider mine as referable to 
the same type, notwithstanding the want of flowers for its com- 
plete identification : it is only in fruit. The floral character 
given above is therefore derived from Sir Wm. Hooker’s figure, 
which closely resembles that of the following species, which I 
received from Tweedie. In its intricately spinose habit, it has 
