CONTRIBUTIONS TO BOTANY. 
289 
woody than in the preceding species, and all terminating in an 
acute spine. The stemlets are more slender, less deeply striated, 
with the internodes about f inch apart ; out of these nodes, in 
the younger branches, short foliiferous sprouts make their appear- 
ance, and out of the nodes of the upper part of the principal 
(annotinous ?) branches, are produced the opposite spicated 
racemes of flowers, which are nearly the length of the internodes, 
bearing about three or four pairs of opposite flowers. The 
leaves are 1-1 ^ line long, only ^ line broad, cuneate, upon a 
very short petiole, entire, fleshy, 3-uerved, slightly pubescent, 
and folded back upon themselves ; the pedicels are ^ line long, 
bracteated at base ; the tube of the calyx, including the seg- 
ments, is 1^ line long, and 1 line in diameter; the flowers are of 
a rose-colour. The fruit is spherical, 8 lines in diameter*. 
4. Retamilia articulata, n. sp.; — CoUetia &viic\i\aX&, Philippi, Linn. 
xxviii.679 ; — suffruticosa, glaberrima, ramis teretibus, Isevibus, 
simpliciter intricatim spinosis, spinis longiusculis, ramulisque 
articulatim nodosis, creberrime granuloso-punctulatis, apice 
calloso-pungentibus ; foliis in ramulis novellis parvulis, ovatis, 
utrinque acutis, integris, crassiusculis, eveniis, glaberrimis, 
caducissimis, petiolo canaliculate in sinum stipulae 2-dentatse 
affixo; stipulis oppositis, linea transversali nexis (nodis pro- 
inde quasi articulatis) ; floribus in articulationibus utrinque 
2-4, fasciculatis, e tuberculo bracteato enatis, pedunculo flori 
sequilongo, calyce cylindrico, limbi laciniis 4, triangularibus, 
erectis; petalis 4, squamiformibus, acutis, laciniis dimidio 
brevioribus; staminibus totidem, filamentis incurvatis, bre- 
vissimis, antheris ovalibus, petalis 2-plo latioribus, rima hippo- 
crepica hiantibus, peltatim afl&xis ; stylo brevi, incluso ; stig- 
mate capitato-3-lobo. — In Andibus Chilensibus versus Chilian 
(lat. 36° S.). — V. s. in herb, meo et Hook. (Germain). 
This plant has much the habit of the three preceding species, 
but its branches are not so virgate, and have much shorter 
internodes : the branches, almost bare of leaves and spines, are 
quite terete, perfectly smooth, the internodes being ^ to f inch 
apart ; the spines are 8 to 12 hnes long, the floriferous branchlets 
are twice or three times that length, having the appearance of 
articulated spines, and are often again spinose. The stipules at 
the nodes are small, simple, and acute, and the line of their 
connexion gives an articulated appearance to the branches. Veiy 
young branchlets, bearing leaves and flowers, grow out of the 
upper nodes, and, from the proximity of the axils, they appear 
* A representation of this species, with analytical details, is given in 
Plate 39 e. 
2 P 
VOL. I. 
