GRIFFITHS: NEW AND OLD SPECIES OF OPUNTIA 201 
Opuntia Maideni sp. nov. 
An erect to ascending, spreading, rather compactly branched, 
hemispherical shrub 1-1.5 m. in height; joints obovate, about 
9x 18 cm. at one year of age, at first raised at areoles and slightly 
so the second year, rather light, glaucous green; areoles broadly 
obovate, 4 mm. long, enlarging and becoming subcircular in age, 
tawny, becoming dirty black; leaves short, subulate, terete, 
cuspidate, pointed, 5 mm. long; spicules yellow, in a compact, 
2 mm. tuft in upper portion of the areole, but surrounded above 
by a narrow zone of tawny wool, increasing to 3 mm. in length 
and occupying the entire areole in age; spines at first yellowish, 
turning white, very variable in all characteristics, sometimes the 
second year I or 2, sometimes none, I cm. long or less, or again 
they may be 4 in number and 3 cm. long, flattened and twisted, 
not increasing much in numbers on old wood, but often becoming 
4 cm. in length; buds sharp-pointed, light green with appressed 
segments; flowers yellow, slightly greenish within, filaments 
greenish below, yellow distally, style bright deep red above, white 
below, stigma deep green, 7-parted, petals obovate to cuneiform, 
which contain one central tuft of yellow spicules 2 mm. long an 
3 to 8 fugacious, hair-like spines, I cm. or less in length. 
My knowledge of this perfectly characteristic species is derived 
from a specimen received from Professor J. H. Maiden, in whose 
honor it is named. He received it from some European collection. 
Its origin is unknown. I have received it from no other source. 
It was transmitted by Professor Maiden under No. 42 and is 
carried in our collections as M. 42. For years it was carried 
under protection at Chico, but for the past three years it has 
survived in the field without injury. 
OpuNnTIA BARTRAMI Raf. 
. Opuntia Bartrami Raf. Atlantic Jour. 1: 146. 1832. 
An erect to ascending, rather strict and sparingly. branched 
plant a meter or less high; joints elliptical to ovate, usually more 
or less pointed above and below; often 8 x 18 cm. or again small, 
5x 8cm., often in current season’s growth widest at middle and 
gradually narrowed each way, surface smooth, dark green, leaves 
conspicuous dull, reddish-green, 14-18 mm. long, somewhat curved 
outward; areoles subcircular to broadly obovate, 3 mm. long, 
brown; spicules yellow, in a compact tuft in central portion of 
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