280 
CONTRIBUTIONS TO BOTANY. 
flowers are more numerous, and are supported by longer pedun- 
cles. Its capsule resembles that of Colletia, being half imbedded 
in the simple cupular base of the calyx, while in Discaria it ap- 
pears to be surrounded by two thickened cups, the inner one 
being somewhat longer, originating in the growth of the adnate 
disk, and the protrusion of its free margin beyond the cup of the 
calyx : on the contrary, in Ochetophila, the cupuliform support 
IS thin and almost membranaceous, and the disk is not discer- 
nible, owing to its not exceeding the length of the cup of the 
calyx. All the species differ in their habit from Discaria ; they 
often form good-sized trees, and their branches are rarely fur- 
nished with spines, although their extremity is generally sharp- 
pointed; they are copiously furnished with leaves, which are 
much larger and three-nerved. 
The typical species above mentioned is the Rhamnus Chacaya 
of Domhey, erroneously stated to have been brought from Peru ; 
it grows abundantly near the margins of streams in the elevated 
valleys of the Andes, and these localities are hence called “ los 
Chacayes,^^ from the vernacular name of the tree. In general 
appearance it resembles Notophana foliosa, and the two are 
commonly confounded in herbaria ; but the absence of petals in 
the latter genus constitutes an essential difierence. Its generic 
name is evidently derived from the circumstance that its species 
are usually found near running streams ; those of Discaria pre- 
fer, on the contrary, dry, saline, and sandy situations. The 
character of the genus is here remodelled as follows : — 
Ochetophila, Pop. — Char, emend. — Calyx petaloideus, urceo- 
lato-campanulatus, usque ad medium 4-5-fidus, laciniis acutis, 
intus carinatis, calloque sub apice signatis, reflexis, sestiva- 
tione valvatis. Petala 4-5, oblonga, cucullata, imo attenuata, 
laciniis calycinis sequilonga, et cum staminibus in sinubus' in- 
serta. Stamina 4-5, petalis recondita; filamenta subulata, 
tenuia, erecta, apice inflexa ; antherce parvulse, ovatse, 2-lob8e, 
imo profundo cordatse et divaricatae, apice dorsi affixse, lobis 
singulatim 2-valvulatis, valva antica hreviore et hinc rima 
hippocrepica hiantibus. Discus carnosus, late pateriformis, 
calyci omnino adnatus, margine vix libero, integro vel sub- 
crenato. Ovarium depresso-globosum, 3-sulcatum, liberum, 
medio disci insitum, et eo vix immersum, 3-loculare ; ovula in 
loculis solitaria, erecta. Stylus calyce dimidio brevior, 3-sul- 
catus, glaber. Stigma obtuse 3-lobum, lobis paulo divaricatis. 
Fructus globosus, Notophcmcc similis. Semen Colletice. 
Frutices arborescentes et erecti vel demissi et decumbentes, in An- 
dibus Ckilensibus vigentes, foliatione et inflorescentia ut in No- 
tophsena, sed stipulis diversis. 
