Comprehensive Description
(
英語
)
由Smithsonian Contributions to Botany提供
Barbacenia schwackei Goethart & Henrard
SPECIMENS EXAMINED.—Heringer 5263.
SURFACE VIEW.—Hairs: absent. Epidermis: adaxial cells rounded; abaxial cells rectangular, few
rounded; cell walls thin on both surfaces. Stomata: paracytic, 27 × 12 μm; present on abaxial surface.
TRANSVERSE SECTION OF LAMINA.—Isolateral; V-shaped. Abaxial and adaxial surfaces slightly undulating. Epidermis: cells on abaxial and adaxial surface rounded to dome shaped, few conical; cells thin walled. Layer of parenchyma cells subjacent to adaxial epidermis. Cuticle: thin and ridged on adaxial and abaxial surfaces. Stomata: present on abaxial surface; small substomatal chamber present. Mesophyll: undifferentiated. Compactly arranged spongy tissue interspersed with some translucent cells. Vascular bundles: 41; few commissural bundles observed. One to two large vessels present in each vascular bundle, mostly one. Two phloem units lying laterally in flanges of Y-shaped abaxial girder. Inverted Y-shaped adaxial girder present on each vascular bundle. Bundle sheath completely surrounding each vascular bundle. Crystals: none observed. Tannins: numerous, virtually filling most mesophyll tissue.
- 書目引用
- Ayensu, Edward S. 1974. "Leaf Anatomy and Systematics of New World Velloziaceae." Smithsonian Contributions to Botany. 1-125. https://doi.org/10.5479/si.0081024X.15
Comprehensive Description
(
英語
)
由Smithsonian Contributions to Botany提供
Barbacenia schwackei Goethart & Henrard
Barbacenia schwackei Goethart & Henrard, Blumea, 2:359, fig. J, 1937.—L. B. Smith, Contr. U.S. Nat. Herb., 35:278, 1962.—Ayensu, Smithsonian Contr. Bot., 15:58, fig. 21a–c, pl. 39d, 1974.
TYPE.—Serra do Cipó, Minas Gerais, Brazil, 25 April 1892, Schwacke 8357 (B, holotype; B, photo 125).
DISTRIBUTION.—Known only from the type-collection.
- 書目引用
- Smith, Lyman B. and Ayensu, Edward S. 1976. "A Revision of American Velloziaceae." Smithsonian Contributions to Botany. 1-172. https://doi.org/10.5479/si.0081024X.30
Barbacenia schwackei: Brief Summary
(
越南語
)
由wikipedia VI提供
Barbacenia schwackei là một loài thực vật có hoa trong họ Velloziaceae. Loài này được Goethart & Henrard miêu tả khoa học đầu tiên năm 1937.
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