one another, walls smooth or papillose, KOH yellow or red, occasionally orange, occasionally yellow distally and red basally; costa with or without a differentiated
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and the pollen reward is relatively scanty. A few bees and flies are occasional visitors. Usually pollination of these species appears to be by wind or
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branched, usually with central strand, often densely radiculose, tips occasionally deciduous. Leaves in several rows around the stem, erect or secund, often
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Roots fibrous, principally adventitious. Stems (culms) usually trigonous, occasionally terete, rarely compressed, usually solid, rarely hollow or septate. Leaves
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persistent, occasionally persistent through growing season or longer, rarely quickly deciduous; blade glabrous or floccose to tomentose, occasionally also glandular
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linear, lanceolate, or triangular, occasionally plicate; base sometimes decurrent; margins often plane, occasionally recurved proximally or throughout,
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Parryi W. W. Smith is characterized by x = 22, involute leaf vernation, occasional white farina, leaves with obscure petioles, blades thick, glabrous, usually
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layers of efibrillose, inflated, thin-walled, nonornamented cells, with an occasional pore in the distal end of the outer wall of the superficial cell layer
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margins broad, transparent, entire to erose. Venation mostly free with occasional areoles, never more than 1 included veinlet in fertile areoles. Sori round
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apical leaves of stems julaceous; margins entire; laminae 1-stratose, occasional 2-stratose regions near costa in proximal part of leaf; costa subpercurrent
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shores and shallow waters of rivers, lakes, ponds, pastures, and ditches, occasional in tidal waters, or in deep flowing water with slow current Elevation:
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different from adjacent laminal cells. Specialized asexual reproduction occasional, by mullticellular ovoid to ellipsoidal gemmae borne on branched, rhizoidlike
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Mentioned on page 80. Plants annual, papillate with crystalline globules occasional, glabrous. Stems prostrate, branched, 1–4 dm. Leaves: petiole clasping
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infrequently unisexual or mixed, usually laterally compressed or not compressed, occasionally dorsally compressed, with 1-30 sexual florets, distal floret (s) often
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cells heterogeneous: subquadrate to shortrectangular or rhomboidal, with occasional diagonally transverse walls, longitudinally elongate especially distally
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although petal lengths of the two do not overlap, occasional larger-flowered var. alnifolia and occasional smaller-flowered var. semiintegrifolia occur, so
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the two data sets were attributed to reticulate evolution resulting from occasional intergeneric crosses. Arida blepharophylla is somewhat unusual within
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and blades, rarely absent or commonly of hairs, glands, and/or scales, occasionally of white or yellow farina. Veins pinnate or parallel in ultimate segments
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detectable abnormalities at meiosis. In subg. Dudleya and Stylophyllum an occasional rosette may reroot after breaking off or after the common stem dies and
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herbarium specimens; leaf blade carinate; cells of seed coat smooth, shiny; occasional introduction. Allium tuberosum 15 Bulbs 1–4+, ovoid, not attached to rhizome;
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