1899] Collins, — Notes on Algae II 
dom over 2 mm. diameter. Filaments closely packed, sheaths 15-20 y 
diameter, colorless or yellowish, more or less expanded above; tri- 
chomes 6-10 » diameter, aerugineous ; articulations about as long as 
broad below, one third to one quarter as long above, subtorulose, taper- 
ing gradually to a hair-like termination ; heterocysts basal, globose or 
oblong. 
It resembles Æ. minutula (Kuetz.) Born. & Flah., but the thalli are 
much firmer, and not at all encrusted with lime; the trichomes are 
slenderer, and the filaments more densely packed. In some particu- 
lars it agrees with the description of Æ. Beccariana (De Not.) Born. & 
Flah., Revis. des Nost. Het., part 2, p. 56; but the latter has more 
slender trichomes, with longer articulations and much narrower sheaths. 
It grew in abundance at the locality mentioned, in company with 
Schizothrix lacustris var. caespitosa Gomont. It has also been found 
by Professor W. A. Setchell, near Norwich, Conn. 
The species here considered have all been distributed in Fascicle 
XI of the Phycotheca Boreali-Americana ; Cylindrospermum catenatum 
as No. 505; Anabaena catenula as No. 506; Rivularia compacta 
as No. 508. Schizothrix Friestí as No. 503; and S. purpurascens v. 
cruenta as No. 504. 
MALDEN, Mass. 
A PROLIFIC FRINGED GENTIAN. — I have in my herbarium a speci- 
men of the Fringed Gentian, Gentiana crinita, Froel, bearing eighty-five 
flowers. This is certainly an extraordinary number, and it shows what 
a degree of vitality our small annuals can display under suitable con- 
ditions. The plant was collected in a damp meadow in Weston, 
Massachusetts, by Thomas T. Hinkley, and was given to me íresh the 
same day. It is 27 inches high, and is just past flowering. As far as 
I am able to judge, about half of the flowers would have produced ripe 
fruit. — WALTER DEANE, Cambridge, Mass. 
MYOSOTIS COLLINA IN NEW ENGLAND. — An interesting little emi- 
grant from the Old World has recently been collected at the Point of 
Pines, in the town of Revere, Massachusetts. This is the Myosotis 
collina of Hoffman, which appears to have become well established in 
damp, grassy land, where it was found in great abundance. It is a low, 
hairy annual, seldom attaining six inches in height. The spatulate to 
obovate, scarcely pointed leaves are mostly clustered near the base, a 
