A Taxonomic Study of Salix Sections Mexicanae and Viminella Subsection Sitchenses (Salicaceae) in North America

Brittonia ◽  
2000 ◽  
Vol 52 (1) ◽  
pp. 1 ◽  
Author(s):  
Robert D. Dorn
Keyword(s):  
North America ◽  
Taxonomic Study

A Taxonomic Study of Campylopus schimperi and C. subulatus (Bryopsida: Dicranaceae in North America

Brittonia ◽  
1978 ◽  
Vol 30 (3) ◽  
pp. 365 ◽  
Author(s):  
Jan-Peter Frahm ◽  
Dale H. Vitt
Keyword(s):  
North America ◽  
Taxonomic Study

DRECHSLERA ITO

1962 ◽  
Vol 40 (6) ◽  
pp. 809-836 ◽  
Author(s):  
R. A. Shoemaker
Keyword(s):  
North America ◽  
Growth Characteristics ◽  
Herbarium Specimens ◽  
Taxonomic Study ◽  
Perfect State ◽  
Type Specimens ◽  
Artificial Culture ◽  
Formae Speciales

This taxonomic study of the hyphomycete genus Drechslera is based on type specimens, and on fresh collections and herbarium specimens principally from North America. Characters of conidia and conidiophores, and the growth characteristics of the species in artificial culture, are described and illustrated. Two keys to species are included: one based on characters of conidia and conidiophores; the second based on growth characteristics on sucrose proline agar. Fifteen species, one composed of two formae speciales, are accepted. Their names and some of the well-known synonyms are: D. avenacea (Curtis ex Cooke) Shoem. (= Helminthosporium, avenae Eidam); D. bromi (Died.) Shoem.; D. catenaria (Drechs.) Ito; D. dactylidis n. sp.; D. dictyoides (Drechs.) Shoem. f. sp. dictyoides; D. dictyoides f. sp. perenne (Braverman & Graham) n. comb.; D. erythrospila (Drechs.) Shoem.; D. fugax (Wallr.) Shoem. in Hughes (= H. stenacrum Drechs.); D. gigantea (Heald & Wolf) Ito; D. graminea (Rab. ex Schlecht.) Shoem.; D. phlei (Graham) Shoem.; D. poae (Baudys) n. comb. (= H. vagans Drechs.); D. siccans (Drechs.) Shoem.; D. teres (Sacc.) Shoem.; D. tritici-repentis (Died.) Shoem. (= Drechslera tritici-vulgaris (Nisikado) Ito); and D. tuberosa (Atk.) Shoem. (= H. secalis Whitehead & Dickson, = H. japonicum Ito & Kurib., = H. fragosoi Bubak). Also included are the perfect states of six species: Pyrenophora chaetomioides Speg. (st. conid. D. avenacea); P. bromi (Died.) Drechs. (st. conid. D. bromi); P. teres Drechs. (st. conid. D. teres); P. tritici-repentis (Died.) Drechs. (st. conid. D. tritici-repentis); P. japonica Ito & Kurib. in Ito (st. conid. D. tuberosa), and the perfect state of D. dactylidis.

Taxonomic studies on the genus Atrichum in North America

1969 ◽  
Vol 47 (3) ◽  
pp. 353-368 ◽  
Author(s):  
Robert R. Ireland
Keyword(s):  
United States ◽  
North America ◽  
North American ◽  
Distinct Species ◽  
The United States ◽  
Morphological Characters ◽  
Taxonomic Study ◽  
Chromosome Counts ◽  
The Status ◽  
Taxonomic Studies

A taxonomic study was made of several North American taxa in the genus Atrichum. The primary emphasis was on the Canadian taxa and a key to the six species (A. altecristatum, A. angustatum, A. crispum, A. oerstedianum, A. selwynii, A. undulatum) and one variety (A. undulatum var. gracilisetum) of the country is presented. Atrichum oerstedianum, which has been confused with A. undulatum, is added to the moss flora of the United States and Canada. The distribution of A. crispum is clarified and a detailed study of the species revealed new morphological characters that are useful to distinguish it. A variety of A. undulatum, the var. altecristatum, is raised to the rank of a species and morphological and distributional data are given to support the status of A. selwynii as a distinct species. The first chromosome counts are reported for A. selwynii (n = 7) and A. altecristatum (n = 14). Detailed descriptions are provided for A. altecristatum, A. crispum, A. oerstedianum, and A. selwynii.

A Taxonomic Study of the Genus Hypholoma in North America

Mycologia ◽  
1933 ◽  
Vol 25 (3) ◽  
pp. 160 ◽  
Author(s):  
Chas. S. Parker
Keyword(s):  
North America ◽  
Taxonomic Study

A Taxonomic Study of the Genus Hypholoma in North America

Mycologia ◽  
1933 ◽  
Vol 25 (3) ◽  
pp. 160-212 ◽  
Author(s):  
Chas. S. Parker
Keyword(s):  
North America ◽  
Taxonomic Study

A STUDY OF THE SPECIES OF CINTRACTIA ON CAREX, KOBRESIA, AND SCIRPUS IN NORTH AMERICA

1952 ◽  
Vol 30 (4) ◽  
pp. 410-435 ◽  
Author(s):  
D. B. O. Savile
Keyword(s):  
United States ◽  
New Species ◽  
North America ◽  
Canadian Arctic ◽  
Taxonomic Study ◽  
Canadian Arctic Archipelago ◽  
New Varieties ◽  
Northern United States ◽  
Northern Alaska ◽  
One New Species

This is a taxonomic study of Cintractia spp. on nearly one hundred host species, mainly in Canada, northern United States, and southern Alaska. Coverage is very incomplete for northern Alaska, Greenland, and parts of the Canadian arctic archipelago. Eighteen species and varieties are recognized including one new species, Cint. atratae, and four new varieties, Cint. carpophila vars. kenaica and verrucosa and Cint. caricis vars. intermedia and acutarum. Two recombinations are made. The biology and phylogeny of the group are also discussed.

A Taxonomic Study of Tayloria hornschuchii and T. froelichiana in North America

1985 ◽  
Vol 88 (2) ◽  
pp. 82 ◽  
Author(s):  
Catherine LaFarge-England ◽  
Dale H. Vitt
Keyword(s):  
North America ◽  
Taxonomic Study
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