ROSACEOUS GENERA. 243 
beneath, with a fine downy rather than tomentose indument; 
odd leaflet 2 inches long, ovate, abruptly acuminate, almost 
simply serrate-toothed: peduncles and pedicels densely gland- 
ular-hispidulous: calyx aculeolate at base, the segments cinere- 
ous-puberulent: fruit small, very downy. 
Porcupine River, northeastern interior of Alaska, 1891, J. H, 
Turner; type in my herbarium. 
B. Arizonica. Low but upright, the stem sparsely but stiffly 
aculeate; twigs, petioles, and even rachis of the leaf more 
densely hispid with shorter prickles; leaflets usually 5 even on 
fruiting twigs, the odd one cuneate at base and of more or less 
rhomboid figure, all acute, doubly incise-serrate, glabrous above, 
white-tomentose beneath even in fullest maturity: pedicels and 
calyx densely glandular-hirtellous and with frequent large and 
stout prickles: calyx large for the plant, its base aculeolate, its 
deltoid-ovate segments almost caudate-acuminate, often narrow, 
foliaceous at the very tip. 
Mountains of Arizona and New Mexico to those of at least 
southern Colorado; the type from the San Francisco Mountains- 
as collected by myself in 1889. 
MELANOBATUS. Stems greatly elongated and arcuate, glau- 
cous, prickly, the prickles flattened and recurved. Leaves 
pinnately (rarely pedately) 3-5 foliolate. Flowers not showy, the 
calyx parted almost to the base. Petals small, dull-white. 
Fruit hemispherical, parting from the receptacle; drupelets 
small, the pulp scanty, firm rather than watery. Reticulation 
of pyrene running into a keel on the back. 
Genus wholly American, recalling the Old World subgenus or 
genus G/aucobatus (Dumortier); but they are only bluish proper 
Blackberries, not Raspberries. The species of MELANOBATUS 
are few. 
M. OCCIDENTALIS. Linn., under Rubus. 
M. NEGLEOTUS. Peck, S is 
M. tEucopERMIS. Dougl, “ 
DI 
