[article]
| Titre : |
The Genus Crypsis (Gramineae) in the United States |
| Type de document : |
texte imprimé |
| Auteurs : |
Barry Hammel, Auteur ; John Reeder, Auteur |
| Année de publication : |
1979 |
| Article en page(s) : |
pp. 267-280 |
| Langues : |
Anglais (eng) |
| Mots-clés : |
graine Flora Taxa Plants Spikelets Lake water chromosome Glume |
| Résumé : |
"The Old World grass genus, Crypsis, is represented in the United States by three naturalized taxa. Although these are usually treated as specifically distinct in America, European botanists consider two of them to be merely different growth forms of the same species. The few chromosome counts in the literature suggest x = 9 as the basic number. Our studies, including chromosome counts from 44 populations and seed protein analyses from 32 populations, demonstrate that the three taxa differ chemically and represent a polyploid series with a diploid, a tetraploid, and a hexaploid, and a basic chromosome number of x = 8. Each entity seems specifically distinct, and can be recognized by small, but consistent morphological characteristics. Evidence is presented indicating that the correct name for the species listed as C. niliaca in Hitchcock's Manual is Crypsis vaginiflora (Forsk.) Opiz." |
| Type de publication : |
périodique |
| Référence biblio : |
Hammel B., Reeder J., 1979 - The Genus Crypsis (Gramineae) in the United States. Systematic Botany, 4 (4) : 267-280. |
| Permalink : |
http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=66121 |
in Systematic Botany > vol. 4, n°4 (Année 1979) . - pp. 267-280
[article]
|
The Genus Crypsis (Gramineae) in the United States in Systematic Botany, vol. 4, n°4 (Année 1979)