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HYPNUM ROBUSTUM.
Hypnum caule erecto ramoso, foliis densissime iinbrica-
tis ovato-acuminatis falcato-secundis striatis transversim
rugosis, apice subserrulatis basi binervibus, seta
bieviuscula, capsula ovato-oblonga cernua. (Tab.
CVIII.)
Hab. In plaga occidentali Americæ septentrionalis. D . Men-
xies, 1793.
Caulis crassus, erectus, dichotome ramosus, ramis nuuc iterum
divisis. Folia aureo-flavescentia, subnitentia, densissime imbricata,
ovato-acuminata, falcato-secunda,subconcava, striata,
transversim undulata, apice subserrulata, basi breviter biner-
via, raro uninèrvia. Sela sesquiuncialis, rufa, glabra. Capsula
ovato-oblonga, cenma, fusca.
At first I was disposed, with Mr. Menzies, to consider this
plant as merely a variety of H. rugulosum of Weber and Mohr;
but upon further investigation I am induced to publish it as a
distinct species, upon the grounds of its much larger size, its erect
mode of growth, its very robust habit, and its thickly crowded,
striated, and, in almost every instance, two-nerved leaves.
Fig. 1, sterile plant; and Fig. 2, fertile plant, nat. size. Fig. 3,
portion of a branch. Fig. 4, 4, leaves.—»wog-«.
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