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The parenchymatous cells in Hookeria lucens resemble the sieve elements, or conducting cells of the phloem of vascular plants. They have a similar stratification of the wall consisting of two layers, one thinner next to the middle lamella and the other thicker, facing the cell cytoplasm.
The genus is charac-terized by (1) yellowish green plant color, (2) the presence of a central stand, (3) the leaf being com-planate without a costa, (4) leaf cells large, forming. net-like areolation, and (5) the mitriform calyptra (Hooker & Greville 1825; Tan & Robinson 1990).
Species of Hookeria are readily separated from other pleurocarpous mosses in the flora area by their absence of costa, complete lack of border, and very large laminal cells that are observable with a hand lens. When moistened, the plants appear almost transparent or pellucid.
23 de may. de 2023 · 1. ]. Medium-sized plants in flat, soft, shiny, whitish-green to pale-yellowish mats. Stems fleshy, with large cortical cells, prostrate, sparsely branched.
Hookeria acutifolia is a species of warm-temperate and tropical distribution, rare and scattered in eastern North America, and disjunct to British Columbia and Washington state. The leaves may be more lanceolate (broadest below the middle) than those of H. lucens.
Setae elongate, smooth, orange, 0.9- 1.5(-2) cm long, usually ± geniculate shortly above vaginula, usually curved at extreme apex; capsules inclined to subpendent, rarely erect, ovoid to short-cylindric, 1.2-1.8 mm long, ± symmetric; exothecial cells subquadrate to short-rectangular, collenchymatous except in 5-8 rows at the mouth; annulus of ...
1 de ene. de 2014 · The two species of Hookeria in the flora area have laminal cells large enough to observe with a hand lens, lax and broadly oblong-hexagonal or rhomboidal. Lepidopilum (Bridel) Bridel, as
