Zobrazeno 1 - 10
of 55
pro vyhledávání: '"A. Spencer Tomb"'
Autor:
Sylvia Feuer, A. Spencer Tomb
Publikováno v:
American Journal of Botany. 64:230-245
Publikováno v:
American Journal of Botany. 61:486-498
Publikováno v:
American Journal of Botany. 65:717-721
Reports of 150 original chromosome counts are recorded, including reports of 22 genera and 57 species and subspecific taxa in tribe Lactuceae. Also included are first reports for 12 specific or subspecific taxa. x = 9 appears to be the ancestral base
Publikováno v:
Biochemical Systematics and Ecology. 15:395-399
Individuals of Asclepias speciosa and A. syriaca from Kansas and Nebraska were sampled and their alkanes, fatty acids and triterpenoids analyzed. Analysis of variance for 30 compounds yielded four significant and seven highly significantly quantitati
Autor:
A. Spencer Tomb, Trevor Whiffin
Publikováno v:
American Journal of Botany. 59:411-422
A B S T R A C T Seed shape has traditionally been used as a tribal character in the capsular-fruited Melastomataceae. The seed morphology of the five neotropical tribes-Microlicieae, Tibouchineae, Rhexieae, Merianieae, and Bertolonieae-was studied wi
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Autor:
DeVore, Melanie L.1 melanie.devore@gcsu.edu, Pigg, Kathleen B.2 kpigg@asu.edu
Publikováno v:
Journal of the Botanical Research Institute of Texas. Jul2022, Vol. 16 Issue 1, p273-280. 8p.
Autor:
Eric E. Karrfalt, A. Spencer Tomb
Publikováno v:
Systematic Botany. 8:29
The isobilateral leaves of Leucophyllum have numerous, spherical air spaces between the abaxial and adaxial palisade mesophyll layers. These spaces are larger than the secretory cavities of Bontia (Myoporaceae) and have no epithelium. Early in ontoge
Autor:
A. Spencer Tomb
Publikováno v:
Brittonia. 26:203
Chromosome numbers are reported from over 230 populations representing species in eight genera. First counts are reported for three species ofStephanomeria, five species ofLygodesmia, and one species ofPinaropappus. Base chromosome numbers,x = 6, 7,
Autor:
A. Spencer Tomb, Alwyn H. Gentry
Publikováno v:
Annals of the Missouri Botanical Garden. 66:756