. Selected western flora : Manitoba, Saskatchewan, Alberta . Botany; Botany; Botany. 10 SELECTED WESTERN FLORA 1. ELODEA. Wateb-weed. Flowers dioecious, or the fertile bearing stamens; sterile flowers ininute, the fertile ones larger, with a 6-parted perianth. Slender, submerged, perennial herbs with somewhat transparent veinless leaves arranged opposite or in whorls. 1. E. canadensis, Miehx. Canadian Wateb-weed. Leaves linear to oval; stamens 9 in sterile flowers, 3 or 6 sessile anthers in the fertile; a good aquarium plant, not uncommon on the bottom of slow- running or still water. (Anachar
. Selected western flora : Manitoba, Saskatchewan, Alberta . Botany; Botany; Botany. 10 SELECTED WESTERN FLORA 1. ELODEA. Wateb-weed. Flowers dioecious, or the fertile bearing stamens; sterile flowers ininute, the fertile ones larger, with a 6-parted perianth. Slender, submerged, perennial herbs with somewhat transparent veinless leaves arranged opposite or in whorls. 1. E. canadensis, Miehx. Canadian Wateb-weed. Leaves linear to oval; stamens 9 in sterile flowers, 3 or 6 sessile anthers in the fertile; a good aquarium plant, not uncommon on the bottom of slow- running or still water. (Anacharis canadensis of Planchon), Man. and west- ward. X. ;E (Grass Family). Herbs with hollow stems, closed at the nodes, and two-ranked parallel-veined leaves; leaves divided into blade and sheath, the sheath en- veloping the stem with the edges overlapping; flowers small, perfect, without distinct perianth, and arranged in spikelets consisting of a short axis, or rhachis, and 2-many bracts arranged Pj(j 10 Biagram ^^ *^° vertical ranks; the two lowest bracts showing the struc- (glumes) empty, and each succeeding one ture of a spikelet (lemma) bearing in its axil a single flowEir; the of grass. flower usually subtended by another bract "' *'TeV- / fl™^' ^' (R^'^^*) '^*^ i*^ ^^^^ ^° *^^ rhachis of the ' '._ ' spikelet, the two bracts enclosing the flower; floral envelopes wanting; stamens 3; ovary 1-celIed and 1-ovuled; fruit a caryopsis; spikelets arranged in spikes, racemes, or panicles. 1. HORDEUM. Barley. Spikelet 1 or rarely 2-flowered, three together at each joint of the flat-jointed rhachis, the centre one sessile, perfect, the lateral pair usually pediceled, and generally reduced to awns; the spikes becom- ing disjointed at maturity, the joints fall with the spikelets attached. 1. H. jubatum, L. Squirrel-tail or Skunk-tail Grass. '' Biennial, either erect, or with the stems declining at the base; the lateral pair of spikelets and the glumes of the perfect
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1915
