Comprehensive Description
(
英語
)
由Smithsonian Contributions to Botany提供
Vellozia granulata Goethart & Henrard
Vellozia granulata Goethart & Henrard, Blumea, 2:373, 1937.—L. B. Smith, Contr. U.S. Nat. Herb., 35:264, 1962.—Ayensu, Smithsonian Contr. Bot., 15:26, fig. 6c–e, 1974.
TYPE.—In campo, Diamantina, 14 April 1892, Glaziou 19934 (L, holotype; B, photo; P, isotype).
DISTRIBUTION.—Brazil: Minas Gerais: Diamantina and vicinity.
- 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
Comprehensive Description
(
英語
)
由Smithsonian Contributions to Botany提供
Vellozia granulata Goethart & Henrard
SPECIMENS EXAMINED.—Glaziou 19934; Riedel s.n.
SURFACE VIEW.—Hairs: few papillae present. Epidermis: cells square to rectangular, thin walled. Stomata: tetracytic, 18 × 12 μm; present on abaxial surface; seen on both surfaces in Glaziou 19934.
TRANSVERSE SECTION OF LAMINA.—Dorsiventral; V-shaped with margins turned very slightly inversely; small median adaxial groove; groove large in Glaziou 19934. Adaxial surface slightly undulating, ridged in Glaziou 19934. Abaxial furrows one-half thickness of blade, furrows almost absent in Glaziou 19934. Epidermis: cells on both surfaces dome shaped to conical. Two to three layers thick-walled parenchyma cells subjacent to epidermis and interspersed with sclerenchyma strands. One to two layers thin-walled parenchyma in Glaziou 19934; few sclerenchyma strands. Another layer of large parenchyma cells above palisade tissue. Cuticle: slightly ridged on both surfaces; cuticle fairly thick. Stomata: present in furrows; substomatal chamber virtually absent. Mesophyll: three layered palisade grading into spongy tissue; cells near abaxial surface more compactly arranged; spongy tissue in Glaziou 19934 completely obliterated in most sections. Large translucent palisade tissue radially oriented above vascular bundles and on furrows. Vascular bundles: 19 in Riedel s.n.; 29 in Glaziou 19934; commissural bundles not observed. One to two vessels larger than others. Two phloem units lying laterally in flanges of Y-shaped abaxial girder. Adaxial cap usually small, rather large in Glaziou 19934. Sclerenchyma strands and isolated fibers forming a layer between abaxial epidermis and a distinct layer of parenchyma cells. Bundle sheath completely surrounding vascular bundles. Crystals and tannins: not observed.
NOTE: The two specimens examined are not identical—a clear indication of misidentification.
- 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
Vellozia granulata: Brief Summary
(
越南語
)
由wikipedia VI提供
Vellozia granulata là một loài thực vật có hoa trong họ Velloziaceae. Loài này được Goethart & Henrard miêu tả khoa học đầu tiên năm 1937.
Bài viết liên quan đến Bộ Dứa dại này vẫn còn sơ khai. Bạn có thể giúp Wikipedia bằng cách mở rộng nội dung để bài được hoàn chỉnh hơn. 
