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Contributions from the United States National Herbarium (2008) (14596677860)
Summary
Identifier: contributionsfro562008nat (find matches)
Title: Contributions from the United States National Herbarium
Year: 1890 (1890s)
Authors: National Museum of Natural History (U.S.). Dept. of Botany United States National Museum
Subjects: Botany
Publisher: Washington, DC : Dept. of Botany, National Museum of Natural History
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Biodiversity Heritage Library
Text Appearing Before Image:
Figure 68. Festuca sumapana. A. Stylized growth form. B. Habit. C. Ligule. D. Spikelet. E. Glumes. F. Lemma. G. Lemma withpalea and rachilla. H. Leaf blade cross-section. A-H, Clee/7930 (COL). 138 Festuca in South American Paramos
Text Appearing After Image:
1 mm Figure 69. Festuca tolucensis subsp. tolucensis. A. Stylized growth form. B. Habit. C. Ligule. D. Spikelet. E. Glumes. F. Lemma.G. Lemma with palea and rachilla. H. Leaf blade cross-section. A-H, Stancik 4279 (PRC). Festuca in South American Paramos 139 awned, the awn 1-1.5 mm long; callus glabrous;paleas almost as long as the lemma, lanceolate, mem-branous, scabrous, short-hairy; anthers 2.5-3 mmlong; ovary apex glabrous. Caryopses lanceolate;hilum 5/6 as long as the grain, linear. Leaf blade anatomy.—Cross-sections typicallywith 5-9 vascular bundles and 3-5 ribs above;sclerenchyma under abaxial epidermis continu-ous, extending to somevascular bundles, adaxialsclerenchyma present in 3-5 ribs, isolated; abaxialepidermis with a dense covering of prickles; adaxialepidermis hairy, the hairs 0.03-0.05 mm long. Observations.—Festuca tolucensis is morpho-logically similar to F. subulifolia and both species form tussocks of fine-leaved plants. Besides differe-ing in leaf cross-secti
This large AI-assisted collection comprises about 60,000 images of botanical drawings and illustrations. It spans from the 14th to 19th century. As of today, we estimate the total number of botanical illustrations in our archive as 200,000 and growing. The "golden age" of botanical illustration is generally considered to be the 18th and 19th centuries, a time when there was a great deal of interest in botany and a proliferation of botanical illustrations being produced. During this period, many of the great botanical illustrators of the time, such as Maria Sybilla Merian, Pierre-Joseph Redouté, and John James Audubon, were active and produced some of the most iconic and influential botanical illustrations of all time. In addition to being used for scientific purposes, botanical illustrations were also highly prized for their beauty and were often used to decorate homes and other public spaces. Many of the most famous botanical illustrations from this period are still admired and collected today for their beauty and historical significance. All large Picryl collections were made possible with the development of neural image recognition. We made our best to reduce false-positive image recognition to under 5%.
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