Add to ORKGMost of the known species of waterlily (Nymphaea Sm.) are extremely variable. The student feels obliged to recognize certain extreme forms as species. These are often restricted geographically. But where their habitats are connected by continuous land areas, the intermediate country is usually populated by a series of waterlilies which grade insensibly from one extreme to the other. The commoner white waterlilies of North America illustrate these conditions
The following notes are the result of a series of studies made during the summer of 1895 when the wr...
Water lilies are from a family of flowering plants, Nymphaeaceae. They live as rhizomatous aquatic h...
The genus Natrix, found in both hemispheres, comprises about 15 North American species and sub-speci...
At the meeting of this Academy held in Grinnell one year ago I reported some observations upon the w...
Opportunity was made last summer (191) for examining the water lilies (Nymphaea) growing in the west...
http://deepblue.lib.umich.edu/bitstream/2027.42/52372/1/803.pdfDescription of 803.pdf : Access restr...
http://deepblue.lib.umich.edu/bitstream/2027.42/52327/1/758.pdfDescription of 758.pdf : Access restr...
In three former papers the writer has listed numerous plants new to our state, or noteworthy for oth...
In this paper it is the intention of the writer to enumerate only such species as have not before be...
A list is presented of the 147 species of marsh and aquatic tracheophytes known from Clinton, Jackso...
The fruits of Polygonum coccineum Muhl. and P. natans A. Eaton constitute an important source of foo...
During the summers of 1933 and 1934 about 750 species of flowering plants, ferns, and mosses were co...
The aquatic flora of northern and northwestern Iowa is of great interest, and it deserves especial a...
The following plants are not in Mr. Cratty\u27s1 catalogue and, so far as I know, have not been defi...
An interesting Nitella was collected in Alabama, June 6, 1947, by Francis X. Lueth of the Department...
The following notes are the result of a series of studies made during the summer of 1895 when the wr...
Water lilies are from a family of flowering plants, Nymphaeaceae. They live as rhizomatous aquatic h...
The genus Natrix, found in both hemispheres, comprises about 15 North American species and sub-speci...
At the meeting of this Academy held in Grinnell one year ago I reported some observations upon the w...
Opportunity was made last summer (191) for examining the water lilies (Nymphaea) growing in the west...
http://deepblue.lib.umich.edu/bitstream/2027.42/52372/1/803.pdfDescription of 803.pdf : Access restr...
http://deepblue.lib.umich.edu/bitstream/2027.42/52327/1/758.pdfDescription of 758.pdf : Access restr...
In three former papers the writer has listed numerous plants new to our state, or noteworthy for oth...
In this paper it is the intention of the writer to enumerate only such species as have not before be...
A list is presented of the 147 species of marsh and aquatic tracheophytes known from Clinton, Jackso...
The fruits of Polygonum coccineum Muhl. and P. natans A. Eaton constitute an important source of foo...
During the summers of 1933 and 1934 about 750 species of flowering plants, ferns, and mosses were co...
The aquatic flora of northern and northwestern Iowa is of great interest, and it deserves especial a...
The following plants are not in Mr. Cratty\u27s1 catalogue and, so far as I know, have not been defi...
An interesting Nitella was collected in Alabama, June 6, 1947, by Francis X. Lueth of the Department...
The following notes are the result of a series of studies made during the summer of 1895 when the wr...
Water lilies are from a family of flowering plants, Nymphaeaceae. They live as rhizomatous aquatic h...
The genus Natrix, found in both hemispheres, comprises about 15 North American species and sub-speci...