Tas. 8105. 
RIBES crvuentoum. 
Western United States. 
SaxirraGacex. Tribe Rrpzstex. 
Ries, Linn.; Benth. et Hook. f. Gen. Plant. vol. i. p- 654, 
Ribes (§ Grossularia) cruentum, Greene, Pittonia, vol. iv. p. 35; a R. amicto, 
Greene, foliis et calyce fere omnino glabratis preecipue differt. 
Frutew diffuse ramosus, novellis minutissime puberulis exceptis, glaber; aculei 
subaxillares 3, stricti vel leviter curvati, <-4 poll. longi, medio lateralibus 
longiori. Folia suborbicularia, 3- vel 5-lobata, 3-14 poll. diam., basi 
distincte lobata vel interdum fere truncata; lobi breviter lateque crenati; 
petioli gracillimi, circiter } poll. longi. Pedunculi solitarii, 1-flori, }-3 poll. 
longi, bractea solitaria spathacea decidua ovarium fere omnino vaginante 
instructi. Caly« circiter 3 poll. longus, glaber, saturate ruber, interdum 
apice loborum pallide viridis ; tubus subcylindricus, circiter 2 lin. longus ; 
lobi oblongi, 3-4 lin. longi, obtusi, primum patentes, demum reflexi. 
Petala erecta, alba, late obovata, involuta, 2 lin. longa, apice 14 lin. lata, 
ibidem minute denticulata. Stamina calycis lobos zequantia vel leviter 
superantia; anther sagittato-oblongew, fere 2 lin. longee, apiculate. 
Ovarium aculeis pallidis cum glandulis sessilibus vel breviter stipitatis 
mixtis dense vestitum. Stylus staminibus paulum longior, bifidus. Bacca 
subglobosa, rubra, circiter 3 poll. diam., aculeis patentibus 2-3 lin, longis 
armata. 
The specimen figured, which was obtained from a plant 
purchased from Mr. L. Spiith, of Rixdorf, Berlin, in 1899, 
differs, in some particulars, from the wild specimens pre- 
served in the Kew Herbarium. The most noteworthy is, 
that in the cultivated plant the petals are much broader 
and less conspicuously denticulate at the apex. It is also 
described as “wholly glabrous,” but in the cultivated 
Specimen a minute, but rather dense, pubescence may be 
found on the younger branches and leaves. Beyond this 
there is little to distinguish it from R. amictwm, of which 
the pubescence is very marked. : 
R. cruentum, according to Prof. Greene, is common in 
the Californian Coast Range, from Sonoma County north- 
ward into Southern Oregon. 
The plant at Kew is growing in the Ribes Collection, 
near the Temperate House, and is now about two feet 
high and more than a yard across. It flowers in May. 
Descr.—A dwarf, diffusely branched shrub, glabrous, 
except the very minute pubescence on the younger parts ; 
subaxillary spines three, straight or slightly curved, a 
Novemper Ist, 1906. 
