File:The Cactaceae - descriptions and illustrations of plants of the cactus family (1919) (14782866542).jpg

Identifier: cactaceaedescri02brit (find matches)
Title: The Cactaceae : descriptions and illustrations of plants of the cactus family
Year: 1919 (1910s)
Authors: Britton, Nathaniel Lord, 1859-1934 Rose, J. N. (Joseph Nelson), 1862-1928
Subjects:
Publisher: Washington : Carnegie Institution of Washington
Contributing Library: The LuEsther T Mertz Library, the New York Botanical Garden
Digitizing Sponsor: The LuEsther T Mertz Library, the New York Botanical Garden

View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.

Text Appearing Before Image:
persistingon the fruit; stamens numerous, borne on the narrow elongated throat; ovary and lower part offlower-tube bearing many small scales, these subtending felted areoles which afterwards bear clustersof spines; fruit globular, edible when young, covered with clusters of spines, but when fully maturebecoming naked; seeds dull black, somewhat punctate, acute on the back. In its fruit this genus is nearest Lemaireocereus, to which we once referred its twospecies; the perianth, however, is much more elongated and more persistent; in habit andshape of spines the species are very different from any of Lemaireocereus. Two species, natives of Lower California, are recognized, of which Cereus eruca Bran-degee is the type. The generic name is from the Greek, signifying dagger-cereus, with reference to thedagger-like spines. Key to Species. Prostrate, the tips ascending; flowers yellow . i. M. eruca Bushy, erect, 1 meter high or less; flowers purple 2. M. gummosus BRITTON AND ROSE, VOL. II.
Text Appearing After Image:
M E Kauin del. 1. Part of branch of Dendrocereiis nudi/lorus. 2. Flowering branch of the same. 3. Flowering branch of Nyctocereus gnatemalensis. (Natural size.) MACHAEROCEREUS. II5 1. Machaerocereus eruca (Brandegee). Cereus eruca Brandegee, Proc. Calif. Acad. II. 2: 163. 1889. Lemaircoccrcits eruca Britton and Rose, Contr. U. S. Nat. Herb. 12: 425. 1909. Prostrate, except the erect or ascending tips; branches 1 to 3 meters long, 4 to S cm. in diameter,usually simple, rooting on the under surface, dying at the older end and growing forward at the other;sometimes several plants starting as branches from a common parent as a center and first radiat-ing out, then dying at the rear; ribs about 12; areoles large, 2 cm. apart; spines about 20, veryunequal, pale gray, the outer ones terete, the inner ones stout and flatter, the longest about 3 cm.long; flowers 10 to 12 cm. long, described as yellow; tube about 10 cm. long, nearly 6 mm. indiameter; limb 4 to 6 cm. broad; ovary very spiny; fru

Note About Images