The American botanist and florist; including lessons in the structure, life, and growth of plants; together with a simple analytical flora, descriptive of the native and cultivated plants growing in the Atlantic division of the American union . stems, or with whorled branches. Stems striate-sulcate, jointed, fistular between, and separable at, the joints. Sheathsdentate, crowning each internode. Fructification a dense, oblong-cylin-dric, terminal, and cone-like spike, composed of 6-sided, peltate scales,arranged spirally, bearing beneath 4—7 spore-cases, Mhich open globular, e
The American botanist and florist; including lessons in the structure, life, and growth of plants; together with a simple analytical flora, descriptive of the native and cultivated plants growing in the Atlantic division of the American union . stems, or with whorled branches. Stems striate-sulcate, jointed, fistular between, and separable at, the joints. Sheathsdentate, crowning each internode. Fructification a dense, oblong-cylin-dric, terminal, and cone-like spike, composed of 6-sided, peltate scales,arranged spirally, bearing beneath 4—7 spore-cases, Mhich open globular, each with 4 elaters attached, involving them spirally, oropen when discharged. (See Figures.) EQUISETUM, L. ScouringRush. Character the same asthat of the order.—The sheathsmay be regarded as a whorl ofunited Ivs. The cuticle aboimdsin silex. 555, Equisetum arvense. 556, E. sj-lvati-cum. 557, Section of the spike, enlarged. 558,A peltate scale with 7 sporanges beneath (orone compound sporange), magnified. 559, Aspore with its elaters highly magnified. y^y ?uvti ij/^ ^^^-i**, § Species fruiting in Spring and decaying before the following Winter,. .(a)§ Species fruiting in Summer and lasting through the following .(&). 364 OiiDEii 159.—FILICES. a Fertile stems never bi*anching, the sterile with simple, whorled branches. .Nos. 1, 2a Fertile stems at length, like the sterile, with compound, whorled branches. .Nos. 3, 4 h Stems with whorls of simple branches from the middle joints Nos. 5, 6 h Stems mostly simple, large, 20-40-furrowed Nos. 7—9 h Stems always simple, very slender, 3-9-farrowed Nos, 10, 11 1 E. arvense L. Fertile stems erect, 6—8, simple ; sterile 12-14-furrowed, with sim- I)le, ascending, 4-angled branches; sheath cut into long dark-brown teeth; spike6—12, oblong. Can. to Va. and Ky. The sterile stems appear after the serotinum. Sterile plant also producing a late spike of fruit. Pa. (Porter). 2 E. Telmateia Ehr. Ivory H. Sterile ste
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectbotany, bookyear1870
