204 BOTANICAL GAZETTE. [ August, 
upon the mainland, must forever be a bar to its complete extirpa- 
tion ; yet the natural tendency of the species I think we can show 
to be on the decline or toward extinction. Sealers report that 
once abundant upon Anacapa and San Nicolas, it is now scarce ; 
on Clemente, it was only observed in two localities, and only one 
or two plants in each; yet only a dozen years ago it constituted 
unbroken forest, extending for miles upon the high plateaus. Ex- 
traneous causes alone are not sufficient to account for its disappear- 
ance; the few luxuriant specimens left are readily accessible to 
sheep and goats, and their ravages unsupported will not explain 
‘away its manifest decadence, 
_ No trace ef it is found on Catalina Island, and Bird Island, 
a rugged, rocky islet not two miles distant, carries it in some 
profusion. The latter island is not used for grazing stock, while 
atalina is; yet a resident on that island before the first sheep or 
‘goat was introduced, thoroughly familiar with the plant, and for 
whose close observant power ave the highest respect, assures 
me that he has never seen a single plant within its limits. 
Of other plants having mainland representatives, and whose 
heroie¢ size arrest attention, we may briefly mention Solanum 
Xanti, var. Wallacei—a rank growing form. 
Ceanothus sorediatus, from Catalina, Dr. Gray says, “never 
saw it before in such large leaf and fruit.”® On the southern 
‘mainland a straggling shrub of 12 to rarely 15 feet; here it be- 
comes a tree of 25 feet. 
common Convolvulus occidentalis of the mainland be- 
‘arborescent species upon the islands. E. arborescens Greene of 
Santa Cruz I have not seen, but from name and description it 
‘presents a marked difference from anything continental. E. gi- 
‘ganteum Wats. shows a contrast still more striking, outstripping 
‘in heroic dimensions anything yet known in the genus. Not 
‘rarely a bush 10 feet in height and the same diameter, uniformly 
topped with its magnificent cream-colored cymes eighteen inche 
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