Botany of western Texas Volume 3; A manual of the phanegrams and pteridophytes of western Texas

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1894 Excerpt: ...root: leaves much longer than the stem, acuminate, keeled, with scabrous margin: involucre of 3 leaves, one much elongated: umbel of 4 or 5 unequal rays: spikelets linear-lanceolate, loosely imbricated, smooth and shining: scales oblongovate, obtuse, reddish-purple.--Texas (Drumniond) and Arizona (Rothrock). 7 Spikelets slender, in loose or sometimes compact heads in simple or compound umbels: scales decurrent in usually persistent scarious wings: stamens 3: achene linear to oblong..-Stem jointed, leafless. 22. C. articulatus L. Stems stout, 9 to 15 dm. high, from a creeping rootstock bearing tuber-like buds: involucre very short, of 3 bract-like pungent leaves: umbel compound, many-rayed, spreading or recurved: spikelets long (1 to 3.5 cm.), linear, spreading, 30 to 40-flowered, 3 to 10 in a cluster: scales whitish, oblong, obtuse, 7-nerved.--Extending from the Gulf States along the coast of Texas. Var. Conglomerates Britton, of the valley of the lower Kio Grande, has spikelets 2.5 to 37.5 cm. long, in dense clusters on the ends of short rays, producing a compact glomerate cluster 5 to 7.5 cm. in diameter. Dr. Britton also says that "a form of this species with the spikelets greatly elongated has been collected by Mr. Nealley in Texas.".-.-Stems leafy. ++ Perennial by tuberifevous stolons. 23. C. rotvmdus L. Stem slender, 1.5 to 4.5 dm. high, equalling the leaves: umbel simple or slightly compound, about equalling the involucre; the few rays each bearing 4 to 9 dark chestnut-purple 12 to 40-flowered acute spikelets 8 to 18 mm. long: scales ovate, closely appressed, pointless or nearly so, nerveless except on the keel.--From the South Atlantic and Gulf States to the Texan coast (Sabine Pass and Brazos Santiago). Often called "nut grass."...