38 PITTONIA. 
Dr. Gray had told us, while he had the Benthamian specimens 
of Mimulus before him, just what M. lyratus is and where it 
came from. According to what I infer to be its leaf charac- 
ter M. arvensis might be that; but I have no access to the 
original description, and the name, from the remote times of 
the tenth volume of the Prodromus down to the Synoptical 
Flora, I find only amid the uncertainties of the synonymy. 
CASTILLEIA HOLOLEUCA. Shrubby, 3—5 feet high, white 
with a dense flocose tomentum : branches slender, leafy, with 
axillary leafy branchlets: leaves linear, entire, 1—2 inches 
long, less than a line wide: spike 2—4 inches, short-pedun- 
cled; bracts linear-spatulate, entire, or the uppermost 3-cleft, 
their tips cream-colored: calyx 8 lines long, deeply cleft on 
the upper side, merely lobed on the lower : galea of the corolla 
shorter than the tube, exserted, straight. 
Islands of Santa Cruz and San Miguel, 1886. 
SPHACELE FRAGRANS. Shrub 6 feet high: leaves ovate- 
oblong, obtuse, coarsely and irregularly dentate, hastate at 
base, 2—4 inches long, of thin texture, loosely white-woolly 
beneath, glabrate above, not resinous, agreeably aromatic: 
calyx open-campanulate, more than an inch long, its lobes 
triangular-lanceolate, as long as the tube: nutlets large, 
glabrous: corolla not seen. 
In canons of the south side of Santa Cruz Island, 1886. S. 
calycina has a resinous-viscid, ill-scented leaf with crenate 
margin and rounded base, calyx-lobes triangular-acute and 
only half as long as the tube, besides nutlets which are 
glandular-viseid. It can not include this insular shrub, and 
perhaps not those of the southern part of the State, very im- 
perfectly known, which have been named as varieties of it. 
ERIOGONUM GRANDE. Basal shrubby and leafy part a foot 
or two high with many branches ; peduncles 3—5 feet, thick 
and fistulous below, slender and loosely eymose-dichotomous 
above: leaves ovate-oblong, obtuse, cordate at base, the mar- 
