VOL. 5] Plants from Sinaloa, Mexzco. 199 
This slender bush grows on the slopes of the Cerro Colorado. 
It had not come into bloom, and diligent search was required to 
find a few flowering heads. Dr. Robinson obligingly compared 
specimens with A. vi//osa, to which it seems to be allied. 
Mimosa Palmeri Rose. Collected only in fruit. The pointed 
pubescent pod 3-4 cm. long, 3 mm. wide, 6-8 seeded and short- 
stipulate, is curved into a semi-circle. Common about Cofradia. 
Dr. Palmer collected it near Alamos in flower. 
Mimosa spirocarpa Rose. Spikes 12-14 cm. long. It formed 
no fruit. Common about Culiacan. 
Mimosa polyantha Benth., and its var., /evior Rob., are abund- 
ant about Culiacan. 
Mimosa distachya Cav. Near Altata. 
Mimosa asperata \,. var. Berlandieri Rob. Much less pubescent 
and strigilose than Pringle’s 3798. 
Pithecolobium. Several species were collected and have not 
been determined. 
Calliandra rupestris. A small tree 4 m. high, the branches 
unarmed, brown, glabrous: internodes 3-6 cm. long; petioles 14 
mm. long; pinnz + pair, 7 mm. long, slightly pubescent: leaflets 
2 pairs, the veins conspicuous, the inner one of the lower pair 
small; terminal leaflets oblique-ovate, obtuse or somewhat 
pointed, apiculate, 3 cm. long, 15 mm. wide, glabrous excepting 
a few marginal hairs; larger leaflet of lower pair similar to those 
of the upper pair, the inner one rarely absent, 2-7 mm. long; 
stipules broadly lanceolate, 4 mm. long; flowers sessile in heads 
on peduncles 12 mm. long, one or two from the axils: calyx 2 
nim. long, the short teeth rufous-pubescent; corolla 5 mm. long; 
stamens 10, 3-5 cm. long, dark purple below shading into a 
lighter color above; legume unknown. 
Growing among large rocks in a cafion near Cofradia. From 
their described characters this species seems to be near C. 
tergemina and C. Seemannt. 
Calliandra Coulteri Watson. A form with 14-15 pairs of nar- 
row leaflets and often 4 pairs of pinnae. Growing in shade of 
bushes and trees near Culiacan. 
Calliandra grandiflora Benth. Cofradia. 
