i8s BOTANICAL GAZETTE. 



white changing to deep rose-red; styles bifid to below the middle ; 

 capsules pubescent, angled; seeds light ash colored, short oblong, 

 acutely 4 angled, transversely rugose. 



Canons of the San Francisco Mountains, Arizona, September 

 1 880. 



Very closely related to E. setiloha, Engelm, but a larger plant, 

 (forming mats often more than 2 feet across) less leafy, (the internodes 

 an inch long) and less closely appressed to the earth; the seeds al^o 

 are of a different color, those of E. setiloba being more of a reddish 

 gray; but the most obvious distinction is in the appendages of the 

 glands, which, in the species last named, are divided into three seti- 

 form lobes; whereas in E. 7'^';w^/6'r they are nearly always entire, 

 rarely retuse or erose. These appendages ni both si)ecies undergo a 

 change of color; but that change is most marked in the new one 



Tradescantia tuberosa. — Stems solitary from a horizontal, 

 jointed, tuberiferous rhizome, 6 to 12 inches high, simple, slender, 

 retroversely puberulent; leaves narrowly linear, rather fleshy, not 

 open ; sheaths ciliate ; umbels terminal few or many flowered ; pedicels 

 and sepals glandular hairy ; corolla purple. 



Pinos Altos Mountains, New Mexico, in flower August 23, 1880. 



The plant would readily pass for a form of T. Virginica, which is 

 also common in the same regi(jn, but for its entirely different root and 

 habit of growth. The yellow tubers, borne singly or by twos and 

 threes, at the joints of the rhizome, are oblong, an inch or more in 

 length, and obtuse at both ends. My correspondents have received 

 specimens • f this plant under another name, which I hereby beg them 

 to erase; substituting the one here given. — Edwakd Lee Greene. 



The Britisli Moss-Flora, By R. Braiihwaite, M. D., F. L. S. 



&c. — So large a [jroportion of the North American Mosses are identical 

 with those of threat Britain that the i)resent work may well be com- 

 mended to American botanists. It is issued in parts, as was Schimper's 

 Bryologia Eiiropoia. and it a]:»parenlly vields in no respect to that great 

 work in the charicter and completeness both of the letter press and 

 the i)lales. Hut it promises to be of moderate e.xtent, the price is 

 ceitainly moderate, and the te.xt is entirely in English The mosses 

 are taken up monographically, family by family ni a natural arrange- 

 ment, this arrangement being es';entiallv tliat recently proposed by 

 Lindberg. Parts i and 2 have only two plates each ; but the third, a 

 monograph of tlie PolytricJuicea'. has four, which illustrate fifteen 

 s[)ecies It is intended to g'l on with four p'ates to each fasciculus, 

 and to charge at the rate of a shilling a |)lite, incbiding all letter press, 

 and this runs at the rale of a page or two ti each species. At t'nis 

 price remitted to the author, at 303 Clapham Road, the work will be 

 sent post ]5aid to subscribers in the IJnited States. Publishers do not 

 like to meddle with works like this, of limited sale and occasional 

 issue in detached parts, so the author, to whom this is a labor of love, 

 acts as his own publi-,her, and is glad to receive subscriptions directly. 

 •Certainly he '=;p;n-es neither pains nor expense The work is as beau- 

 tiful as it is excellent and thorough. It is in imperial octavo, descrip- 



