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2 edition of Observations on stengelioid species of Vernonia found in the catalog.

Observations on stengelioid species of Vernonia

C. Earle Smith

Observations on stengelioid species of Vernonia

by C. Earle Smith

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Published by U.S. Agricultural Research Service; for sale by the Supt. of Docs., U.S. Govt. Print. Off. in Washington .
Written in English

    Places:
  • Africa.
    • Subjects:
    • Vernonia.,
    • Botany -- Africa.

    • Edition Notes

      Bibliography: p. 85.

      Statementby C. Earle Smith, Jr.
      SeriesAgriculture handbook no. 396, Agriculture handbook (United States. Dept. of Agriculture) ;, no. 396.
      Classifications
      LC ClassificationsQK495.C74 S46
      The Physical Object
      Pagination87 p.
      Number of Pages87
      ID Numbers
      Open LibraryOL5276322M
      LC Control Number71614496

      One such genus is described here for a pair of species in tropical Africa including the common Vernonia purpurea ex Walp. The species known as Vernonia purpurea is a coarse herb (Fig. 1) placed by Jeffrey () in his Vernonia Subgroup A, a subgroup that included the genera Centrapalus Cass. and Vernonella Sond. as synonyms. less similar in the studied species. In all the studied species, cypsela oblong in shape, though shape is not an important character for characterization of taxa. Size is variable for all studied species. Among the studied cypselas, the smallest cypsela is found in case of Vernonia gracilis ( mm X mm excluding pappus, mm mm X

      click on a thumbnail to view an image, or see all the Vernonia thumbnails at the Plants Gallery Britton, N.L., and A. Brown. An illustrated flora of the northern United States, Canada and the British Possessions. 3 vols. Charles Scribner's Sons, New York. Vol. 3:   Lophate sculpturing of Vernonieae (Compositae) pollenReview of Palaeobotany and Palynology ­ Smith, C. E., Jr. Pollen characteristics of African species of VernoniaJournal of the Arnold Arboretum ­ Smith, C. E. Jr Observations on Stengelioid species of Vernonia. Agriculture Handbook No.

        Vernonia [Vernonia galamensis (Cass.)Less.; 2n = 18] is a relatively new crop in many parts of Africa. Most of Vernonia species occur in South America but more than species from Africa have been described with most occurring in Ethiopia and Madagascar. Apart from these two countries, vernonia is also grown in Cape Verde, Eritrea, Mozambique, northern Tanzania and Senegal (Fig. 1). Kining maong panid kataposang giusab niadtong 21 Enero sa Ang teksto puyde magamit ubos sa Creative Commons Attribution-ShareAlike License; puyde madugangan ang mga -awa ang Mga Termino sa Paggamit para sa mga detalye.; Palisiya sa personal nga impormasyon.


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Observations on stengelioid species of Vernonia by C. Earle Smith Download PDF EPUB FB2

Additional Physical Format: Online version: Smith, C. Earle (Claude Earle), Observations on stengelioid species of Vernonia. Washington, U.S. Agricultural. Additional Physical Format: Print version: Smith, C. Earle (Claude Earle), Observations on stengelioid species of Vernonia (DLC) Download PDF: Sorry, we are unable to provide the full text but you may find it at the following location(s): (external link) http.

Introduction. Since Vernonia Schreb. is a strictly American and mostly eastern North American genus (Robinson a, b), a continuing effort is under way to properly reassign the species of the Eastern Hemisphere that have been erroneously placed in that previous efforts to resolve the species of Vernonieae from Africa, one species, Vernonia nyassae Oliv., was examined but left by: 2.

Observations on Stengelioid species of Vernonia Agriculture Handbook No. Agriculture Research Service, Unit-ed States Department of Agriculture, Wash-ington, D.C., 87 pp. Sonder, W. Author: Harold E Robinson.

Several species of Vernonia, including V. calvoana, V. amygdalina, and V. colorata, are eaten as leaf names for these species include bitterleaf, onugbu in the Igbo language, ewuro and are common in most West African and Central African countries. They are one of the most widely consumed leaf vegetables of Nigeria, where the onugbu soup is a local delicacy of the.

The genus Vernonia, consists of species in C Africa including Zaire, Rwanda and Burundi. All species are fully described and keys to sections and species are given. Abstract. A cladistic study of the sections and subsections of the genus Vernonia was performed using 32 characters.

The resulting cladograms indicate that New and Old World taxa are largely distinct, but differences in topology of equally parsimonious trees indicate that.

Vernonia galamensis is a good source of seed oil rich in epoxy acid, which can be used to manufacture plastic formulations, protective coatings, and other products. Seed from a natural stand in Ethiopia contained 31% epoxy acid.

Under cultivation in Kenya, this unimproved germplasm produced a substantial yield of seed with 32% epoxy acid. This African species has good natural seed retention. Nomenclature and Classification > Taxon Record Name > Scientific Name.

Flora of Tamil Nadu, VOL. II, Monosis wightiana DC. in Wight, Contrib. & Ic. Statistics. The Plant List includes 2, scientific plant names of species rank for the genus these are accepted species names.

The Plant List includes a further scientific plant names of infraspecific rank for the genus do not intend The Plant List to be complete for names of infraspecific rank. These are primarily included because names of species rank are.

Erect shrubs, stem reddish, grey-tomentose. Leaves x cm, elliptic, acute at both ends, serrate, scabrous above, pubescent beneath, nerves pairs, regular; petiole cm long. George A.

Lozano, in Advances in the Study of Behavior, B. Vernonia. The recognition of Vernonia amygdalina (Compositae) as a possible chimpanzee medicinal plant was also the result of detailed field observations (Huffman and Seifu, ).An adult female, dubbed CH, was observed during 2 consecutive days, for a total of about 11 hr.

species abundance. While the observations from the diversity of species showed that although, the plots where was V. cinerea present and absent had high species diversity, plots where V. cinerea was present had a higher number of species and these species were more evenly distributed.

It. Observations on Stengelioid species of Vernonia. () AH One hundred twenty years of research on cotton insects in the United States. () AH One-hundred native forage grasses in 11 Southern States. () AH Onion diseases and their control.

() AH Organization of 4-H club work: a guide for local leaders. () AH Most of the species are included in Vernonia Schreb. which is by far the largest genus of the tribe with about 1 species. Vernonia shows considerable variation in habit, ranging from small, scapose herbs to large trees (Bremer, ).

The most characteristic feature of the Vernonieae is found in the styles, which are slender with filiform. ecotones between two formerly ecologically isolated species of Vernonia (Jones, a, b).

From the small sample included in this study, it appears that annual species of Vernonia tend to be autogamous whereas the perennials are outcrosses.

Hybrids can be made between certain of the Stengelioid species of Vernonia. It is likely that this occurs in. Vernonia glauca is similar in appearance to Vernonia noveborecensis.

glauca is shorter, more tolerant of dry sites and generally has leaves with glaucous or whitish undersides. The two species also differ in the color of the pappus. All observations were made using an Olympus model BX51 microscope, with suitable prepara-tions being photographed with Agfa Pan ISO 25 film.

RESULTS Two chromosome numbers, 2n=32 and 2n=34, were seen in the six species of Vernonia (Table 2, Figure 3). There were few differences among the karyotypic formulas and ideograms for V. buddleiaefolia. Check other web resources for Vernonia anthelmintica (L.) Willd. ePIC: Electronic Plant Information Centre of Royal Botanic Gardens, Kew ; AGRICOLA: Article Citation Database or NAL Catalog of USDA's National Agricultural Library Entrez: NCBI's search engine for PubMed citations, GenBank sequences, etc.

; PubAg: USDA's National Agricultural Library database of full-text journal articles and. Abstract In the present study 16 populations belonging to 13 species of the genus Vernonia Schreb.

were examined cytologically. In total, six different chromosome numbers, which represent three basic numbers: x = 10, x = 16 and x = 17, were found.

These results include the first chromosome number reports for the following four species: V. lanifera Cristóbal & Dematt.Description. Vernonia baldwinii is a perennial herb with stems are densely tomentose, branched, and range up to m (3 ft 11 in) in leaves are cauline and alternate, and are about 15 cm ( in) in length and cm ( in) in width.

It has purplish, discoid inflorescences on short, tomentose peduncles. It grows in dry soil in prairies, pastures, open grounds, and.Photographs of important occurrences were recorded during the developmental stages of the capitulum.

A bar diagram, illustrating the incidence of receptacle reflexing among 16 species of Vernonia, was prepared. Observations/Results The Vernonia capitulum in bud was encapsulated by a wall of phyllaries in all the species.