(89 
Vol. VI, No. 36.) BULLETIN oF THE ToRREY Boranical Cius. [New York, Dec., 1877. 
60. Stigeoclonium, Ktz.—St. flagelliferum, Ktz. Meadow pools, 
—St. longipilus, Ktz. Slow waters.—St. fasciculare, Ktz. Rapid 
waters.—St. portensum, Ktz. Parasitic on Cladophora, etc., Santa 
Cruz, Cal.—St. nudiusculum, Ktz. Mountain streamlet. These 
five harmonize well with Kutzing’s diagnosis, but the characters of 
two as distinct species may be questioned. 
61. Chaetophora, Schrank.—Ch. longipila, Ktz. Old culms in 
ee Aye endiviaefolia, Ag. Smaller pools, here and New Jersey. 
cr. : 
62. Gongrosira, Ktz.—G. sclerococcus, Ktz. Stones in small 
streams. 
63. Coleochaete, Breb.—C. orbicularis, Pringsh. Aquatic plants. 
—C, pulvinata, A. Br. Submerged twigs, spring water.—C. diver- 
gens, Pringsh. Leaves of pond plants. 
64. Chantransia, Fries.—Ch. violacea, Ktz. Limestone springs. 
I received also Ch. macrospora from South Carolina, a beautiful 
species described by Wood. 
. $198. Gentiana Andrewsii, Griseb.—Gentiana Andrewsii, as it 
grows in my woods, behaves differently from what it does as de- 
scribed by your correspondents. The flowers do not last a long 
while, if by flowers are meant individual flowers, or the corolla, 
There is a long succession of flowers, but in my locality the individ- 
ual corolla soon begins to fade. The ovarium, however, continues 
to grow, and soon pushes itself through the mouth of the corolla, 
exposing the stigmatic surfaces, which remain in a receptive condi- 
tion for sometime after exposure. An insect could cross-fertilize it, 
when in this condition, wholly from the outside. The only difficulty 
_with me is, that I do not see where the pollen to cross-fertilize is to 
come from. Mr. Darwin teaches that pollen from the same plant, 
or from plants growing under similar conditions, is practically no 
cross-fertilization ; but with me, bees or other insects do not go into 
one flower on one plant, and then away, to another many yards away, 
then returning, and again going back, continuously going and coming, 
as a zealous cross-fertilizer, so beautifully arranged by nature, should 
do; but they go from flower to flower on the same plant, or on 
plants in the vicinity, till all are done; at least this is the case with 
me, whatever they may do elsewhere. 
'. However, it is well to recognize the fact, that plants, and, no 
doubt, insects, behave differently in different places. For instance, 
Mr. Darwin from English experiments utterly denies that Zinum — 
erenne can fertilize itself by its own pollen. He says we mayas 
well “sprinkle over it so much inorganic dust.”’ But a single plant/ 
which I brought with me from Colorado in 1873, bears fruit freely 
in my garden every year. It shows. that how a plant may behave in 
one place is no rule as to how it will elsewhere. 
My Gentiana Andrewsii is not out of flower yet. Isend youa 
flower with exserted stigmas. THomas MEEHAN, 
ES ee 
