140 Robinson and Greenman—Galapagos Flora. 
Forma CuaTHAMENsIs. Leaves shorter and broader at the tip, 
24 to 5 lines long, a little over a line broad at the apex.—Col- 
lected on Chatham Island, lower region, southwest end, June, 1891. 
Forma HoopeEnsis. Somewhat nearer to the above form than 
to the type but with leaves less dilated at the tip.—Collected on 
Hood Island, July, 1891. 
Besides the forms mentioned, Dr. Baur’s collection contains 
the following new or otherwise noteworthy species : 
HypRocoTyLE UMBELLATA L. <A form apparently of this 
species was collected in the upper region of Chatham Island at 
the southwest end, June, 1891. It differs from the typical form 
only in its shallowly repand dentate rather than crenate leaves. 
Borreria Bauru. Slender, ascending: stems weak, a foot 
or so long, branched, terete, slightly woody at base, covered with 
a grayish cortex below; branches ascending, finely puberulent or 
nearly glabrous, 4-angled ; internodes much exceeding the leaves: 
the latter sessile, spreading, ovate to ovate-lanceolate, acute, his- 
pid-ciliate on the revolute margins, slightly scabrous or quite 
smooth above, paler and almost or quite glabrous beneath, 24 to 
34 lines long, ? to 14 lines broad, acutish and with short pungent 
mucronation: flowers minute, 3 or 4 in each of the axils of the 
upper leaves: calyx teeth ovate, acute, hispidulous, erect in fruit, 
a little exceeded by the corolla: lobes of the latter recurved : 
throat pubescent: fruit hispidulous: seeds black, strongly con- 
cavo-convex, finely pitted, shallowly and longitudinally channeled 
upon the dorsal surface.—Collected in the lower region of Chat- 
ham Island at the southwest end, June, 1891. Most nearly 
related to B. ovalis Ands. 
BorRERIA GALAPAGEIA. Stems slender, ligneous, covered 
with roughish fuscous cortex; branches approximate, ascending, 
densely pubescent, leafy; internodes short but usually exceeding 
the leaves: the latter ovate-oblong, 2 to 3 lines in length, 1 to 14 
lines in breadth, with smaller ones fascicled in the axils, obtuse, 
_ covered upon both surfaces with dense grayish and somewhat 
scabrous pubescence; margins strongly revolute; midrib promi- 
nent beneath: flowers about 2 in each of the upper axils: calyx- 
lobes erect, acute, about equalling the corolla, rough-pubescent as 
is also the fruit.—Collected on Duncan Island, August, 1891. 
Apparently nearest B. divaricata Hook. fil. 
Borreria Pactrica. Fruticose: stem terete, ligneous, coy- 
ered with smoothish grayish brown cortex; branches many, elon- 
gated, ascending or widely spreading, mostly simple, with a close 
fuscous and scabrous puberulence, especially upon the four salient 
angles; internodes usually considerably exceeding the leaves: the 
leaves oblong-lanceolate, sessile, acute, mucronate, scabrous above, 
glabrous or nearly so beneath, 34-6 (-8) lines long, scarcely a 
third as broad, and with smaller leaves fascicled in the axils; 
margins revolute; midrib prominent beneath; stipular sheaths 
with about 5 setaceous teeth upon each side: flowers 2 or 3 
