348 The Flora of Sonora. [ZOE 
color as they wither. In the cafions is Vitex mollis, a tree that is 
often planted in the gardens of Hermosillo, and many other plants 
interesting botanically, among which the following, which seem to 
have been undescribed, were found:— 
-AputiLon (WissapuULA) cincTuM. Perennial, 4-6 dm. high, 
stems slender, diffusely branching, white, with a thin appressed to- 
mentum: leaves cordate-ovate, crenate-serrate, acute, on slender 
pedicels of about the same length, upper surface appressed pubescent, 
pubescence of the lower mixed with stellate hairs: flowers solitary 
on stout pedicels shorter than the petioles, not jointed: bracts linear- 
oblong, caducous: calyx cuneate at base, 10-angulate, cleft less than 
half its length into five lanceolate acute lobes, covered with long 
spreading hairs, which also occug sparingly on petioles, peduncles, 
and on the margins and veins of the leaves: corolla 4-2 dm. broad, 
light-purple or lilac, segments cuneate-obovate, inequilateral, twice 
the length of calyx, tomentose in the angles, erose at summit: 
stamineal column very short, horizontal: stamens 24 the length of 
the petals; anthers by the unusual development of the double sep- 
tum, spuriously two-celled, developing a large quantity of mucus 
when wetted: ovary 3-celled; ovules three in each cell, the two up- 
per collateral; styles three, capitate, united only at base, minutely 
and sparsely stellate hairy; carpels three, rounded at apex, loculi- 
cidally-dehiscent to the base within, two-thirds the length without, 
constricted below the middle by a callous ring which is higher ante- 
riorly and posteriorly than at the sides; upper seeds smooth, lower 
conformed in shape to the cavity, tuberculate punctate at the sides, 
and crowned by a hirsute ring; radicle superior. 
This plant hardly belongs to the genus Wissadula, yet according 
to Grisebach’s Flora of the West Indies, it would be included in the 
Wissadula section of Abutilon. The constriction between the upper 
and lower cells is not very apparent externally and does not amount 
to occlusion of the lower, but insomuch as it approaches Abutilon 
weakens Wissadula. The shortening of the stamineal column the 
tricar ellary ovary and collateral ovules occur in other species of 
Abutilon. It was collected near Las Durasnillas, Sonora, Mexico. 
_ ANISACANTHUS ABDITUS. Perennial, the few stems virgate, in- 
durated herbaceous, bearing short branches, leaves and flowers above, 
the whole plant minutely puberulent and abounding in stipitate 
