276 
Lythrum alatum Pursh. Collected at Bradford, Me., along the 
roadside by Mr. F. P. Briggs, is as worthy of record as Silene 
dichotoma and other plants recently introduced in Maine, and 
listed before sufficient time has elapsed to decide their spon- 
taneity. 
Mentha gentilis Smith. Jackman, August, 1895 (Harvey & 
Knight). This is given in Gray’s Flora as a variety under J/. 
sativa. 
Polygonum lapathifolium nodosum (Pers.) Small. Jackman, 
August, 1895 (F. L. Harvey & O. W. Knight). Growing in 
a potato field. 
Cyperus esculentus L. Is found on sandy shores of the Penob- 
scot river about Orono. We believe it has not been reported from 
the Penobscot Valley. 
Carex sterilis excelsior Bailey. Coast of Maine, 1893 (Harvey). 
Our specimens were determined by Professor Bailey. Professor 
Bailey regards this form as C. stellulata, C. echinata and C. sterils. 
Boott var. 3.(BULLETIN, November, 1893, p. 424). As these are 
not mentioned in Fernald’s lists, we presume this form has not 
been recorded. 
Festuca ovina pseudovina Hackel. Was collected in fields 
about Orono in 1892, by Mr. F. P. Briggs. The specimens were 
determined by Vasey, and are undoubtedly correct. 
Agrostis canina alpina Oakes. Collected on Mt. Ktaadn in 
1892 by F. P. Briggs, and determined by Dr. Vasey. 
New Melastomaceae collected by Miguel Bang in Bolivia. 
By A. CoGNIAux. 
x 
' TIBOUCHINA TETRAPETALA Cogn. sp. n. (sect. Pseudopterolepis). 
Ramis petiolis pedunculis foliisque supra setis subadpressis 
breviter denseque vestitis ; foliis parvis, rigidis, breviter petiolatis, 
ovato-oblongis, apice obtusiusculis, basi rotundatis, margine sub- © 
integerrimis, 5-nerviis, subtus brevissime denseque hirtellis ; cymis 
brevibus, plurifloris, subcongestis; floribus 4-meris, satis parviS, 
sessilibus vel subsessilibus; calyce setulis arcte adpressis longius- 
culis eglandulosis dense vestito, tubo campanulato-oblongo, lobis 
