SOUTH AMERICAN PLANTS. 65 
3. Grabowskya obtusa, Arn. loc. cit: G. Boerhaavifolia 
Schlect. Linn. 7-72. Ehretia halimifolia, Nees ab Esenb: 
—foliis breviuscule petiolatis, cuneatis, obovato-oblongis, 
obtusis, calyce 5-partito, laciniis ovalibus, obtusis.—In 
Cordilleris Andium detexi, altitudine 6000 ped. A Men- 
doze desertis retulitque Gillies, altit. 2600 ped.—Verna- 
cule Una del Tigre. 
In the form of its calyx and general appearance, this nearly 
approaches the original species. It is a low growing shrub, 
with very spinous fiexuose branches almost denuded of 
leaves, the stems being round, smooth, and pallid: the 
spines generally longer than the internodes are evidently 
young abortive branchlets, for they often bear leaves, and 
most frequently flowers, sometimes lengthening and becoming 
flexuose and prickly: they grow out above the petiolar in- 
sertion of each leaf, and there appears on either side of — 
every spine, a young branch, bearing copious alternate leaves ; 
these mostly soon die away, leaving cicatrices on both sides. 
The leaves are alternate, oblong, almost orbicular at the apex, 
where there is a slight mucro, they are cuneate at base, 
terminating in a slender petiole, entire on the margin, and 
of a pallid glaucous green on both sides. The calyx is 
tubular, campanulate, somewhat 5-angled at base, the border 
is divided into 5 short, obtusely angular, erect, very fleshy 
teeth. -The corolla is of a lurid white colour, quite glabrous 
outside, the tube is slender at base, gradually swelling above, 
the border is divided into 5 rounded, obovate segments, 
which overlap in estivation: inside it is smooth at base, but 
from one fourth of its length, where the stamens are inserted, 
to a little below the mouth, it is covered with white woolly 
pubescence. The stamens rise above the mouth half the 
length of the tube, the filaments are slender, glabrous above, 
but in the lower half within the tube, they are very pubes- 
cent: the anthers are divaricate at base, and apiculate at the 
summit, The ovarium is small, obovate, green, smooth, 4- 
locular, but at a very early period, the existence of 2 distinct 
bilocular carpels is manifested, a single erect ovule arising 
K 
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