316 
Collected by Mr. C. G, Pringle under oak trees in the Sierra de San Felipe, State 
of Oaxaca, altitude 8,000 feet, August 13, 1894 (No. 4793). 
I have not seen specimens of Galactia hirta, but Mr. Pringle’s specimens answer 
the description so well that I feel no hesitancy in identifying them with that plant. 
The species, however, clearly belongs to Cologania. The type, which was collected 
by Galeotti, was obtained from this same mountain in similar habitat, and at almost 
the same altitude (7,500 feet). 
Rhynchosia pringlei Rose, sp. nov. 
Stem 6 to 15 dm. high, erect, velvety-tomentose; leaflets 3, nearly orbicular, obtuse, 
rounded or slightly cordate at base, 2.5 to 6 cm. broad, strongly reticulated beneath, 
thickish, 3-nerved at base, softly pubescent; terminal leaflet distant; petiole short, 
2.5 to 5 cm. long; stipules not seen; stipels minute; racemes axillary and short (3 to 
7 cm. long) or terminal and paniculate, 25 em. long; bracts large, ovate, acute, 
8 mm. long, caducous; flowers large for the genus; calyx 12 mm. long, 5-toothed; 
the 2 upper teeth somewhat united, the 3 lower with acuminate tips, the middle 
one much longer; corolla normal, yellow or somewhat purplish, pod 2-valved, hir- 
sute, falcate, 30 mm. long, 2- or 3-seeded; seeds flattened, blackish, attached at the 
middle. 
Collected by Rev. Lucius C. Smith in the mountains of San Juan del Estado, State 
of Oaxaca, altitude 7,000 feet, November 4, 1894 (No. 265); by Mr. E. W. Nelson at 
the north end of the Valley of Oaxaca, October 18, 1894 (No. 1552); also by Mr. C.G. 
Pringle on dry limestone hills, Las Sedas, altitude 6,000 feet, September 15, 1894 
(No. 4900). 
Resembling Eriosema in flowers and habit, but with very different seeds. It is 
referred to Rhynchosia with some doubt. The leaves are unlike any species of this 
genus with which I am acquainted. 
Mimosa spirocarpa Rose, sp. nov. PLATE XI, 
Large shrub, 3 to 6 meters high, with velvety pubescence throughout and with 
small scattered prickles; leaves twice pinnate; pinnie 4 to 5 pairs; leaflets 1 (below) 
to 3 pairs, oblique-oval, 16 to 30 mm. long, obtuse; spikes 7.5 to 12.5 em. long, 2 to 4 
in the axils of the leaves; petals valvate, connate below; stamens 10; pod closely spi- 
raled, separating into several indehiscent joints. 
Collected by Dr. Edward Palmer, Culiacan, August 27 to September 15, 1891, in 
flower (No. 1476); October 25 to November 18, 1891, in fruit (Letter H). 
A very peculiar Mimosa and very unlike anything I have ever seen; but the tech- 
nical characters at least are of this genus. Not only are the leaves peculiar, but 
also the pods. In the latter, however, the broad valves separate from the replum 
asin that genus, The ovary, which at first is nearly straight, as it ripens becomes 
curved and when mature forms a close coil. The pods readily separate into 5 to 7 
segments; each segment contains one small black seed. Iam not able to place it 
near any of the described species of Mimosa. The 10 stamens and cylindrical spikes 
. locate it in Bentham’s section, Leptostachyxe. The stems are 2 to 3 inches in diam- 
eter. Dr. Palmer writes that the plant is very showy; the long spikes, which are 
at first purplish, become white and are very abundant. 
EXPLANATION OF PLATE.—Fig. a, flower; b, the same spread out showing pistil and position and 
number of stamens; c, legume, not quite mature; d, the same, mature and separating into sections; 
e, section of the same showing the inner side. Figs. a and bare enlarged 8 diameters; c,d, and e, 2 
diameters. 
Acacia pringlei Rose, sp. nov. 
An upright tree, 6 to 9 meters high; branches with grayish bark covered with 
numerous small lenticels; leaves with a single pair of pinnw; leaflets in 2 pairs, 
large, 25 to 40 mm. long, nearly orbicular, somewhat oblique at base, rourided at 
tip, veins conspicuous, nearly glabrous in age, apparently more or less pubescent 
when young; common petiole short, 12 mm. long or less, bearing a cup-shaped gland 
near the middle; stipules of short, straight spines; flowers in long, slender spikes, 
