The perichaetial leaf is
Webbsmaller than female plants. Perichaetial leaves oblong-lanceolate or ovate-lanceolate, awn long-excurrent, smooth; outer leaves 4–6 ¥ 0.4–0.5 mm, margins entire below, crenulate above; inner leaves 3–7 ¥ 0.3–0.5 mm, margins entire below, crenulate and dissected at apex. Seta ca. 0.2–0.3 mm long. Capsule oblique and asym- WebbSchistidium dupretii (w) – Exothecial cells usually isodiametric, often quadrate, but sometimes with patches of elongate cells, forming a ± regular to very regular pattern; perichaetial leaves narrow or wide, usually concealing major part of the urn; hair point various, but not conspicuously narrower than the chlorophyllose part of the leaf apex; …
The perichaetial leaf is
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Webb22 jan. 1996 · Cladocarpy is interpreted as functional pleu- rocarpy that has evolved in a number of independent lineages and may represent a type of heterochrony-a paedomorphosis in branch development. The terminology for growth form, branching pattern, and position of the perichaetia has been inconsistently used in the literature. … WebbPerichaetial leaves broadly elliptical to broadly ovate, distinctly wider than upper stem leaves; lamina cells small, (You are here ) Basal paracostal cells usually elongate, 4–8 …
Webb1 jan. 2024 · Perichaetial leaves much larger than vegetative leaves, lanceolate to linear lanceolate, ca 3.5 mm long and 0.5 mm wide at base, tapering to apex from wide base; … Webbperichaetial leaves in H. czernyadjevae looks peculiar (Fig. 21 A); it resembles cilia in perichaetial leaves of H. striata (cf. Fig. 7: J–K in Buchbender et al., 2014); however this character might be subjective in evaluation, although fur-ther comparison seems promising; 6 seems to be unique for H. czernyadjevae, although the number of observa-
WebbDicranoweisia crispula is an extremely variable species. In stature the plants vary 1-6 cm, while the leaf length varies 1-3.5 mm. The capsules vary considerably from cylindric to … WebbStems 1–3(–5) cm. Leaves stiffly erect when dry, spreading when moist, linear, 4–5 mm; base sheathing, shoulders well developed, firm; margins plane ... In B. breviseta the capsules are overtopped by the perichaetial leaves (the seta is 1–3 mm), and the costa fills the acumen. As presently understood, B. breviseta is an arctic-alpine ...
Webb2. Funaria hygrometrica is monoecious and autoecious, i.e., archegonia and antheridia develop on two different branches of the same plant. 3. On the apices of the male and female branches develop many antheridia and archegonia, respectively. They are surrounded by perichaetial leaves.
WebbThis small epiphyte does not look like a typical member of the Orthotrichaceae such as Lewinskya affinis. Firstly, the dry leaves are curled and twisted, unlike those of L. affinis which remain more or less straight on drying. Secondly, the capsule is held above the perichaetial leaves, not surrounded by them. When ripe and dry, the capsule has ... rays weather spruceWebbThe meaning of PERICHAETIUM is an enveloping sheath in a bryophyte; especially : a cluster of modified leaves surrounding the sex organs or later the seta of mosses. an … rays weather snowWebbperichaetial leaves show a single row of ventral guide cells; two rows of stereids surrounding a group of two-layered, thin-walled accessory (be-gleiter) cells; and a dorsal … rays weather report ashevilleWebb17 apr. 2010 · In a histological developmental study of the sporophyte–gametophyte junction in mosses, Roth ( 1969) classified the junction into six types based on the criteria of the positional relationship between foot and gametophytic organs, such as conducting strands, unfertilized archegonia and innermost perichaetial leaves. rays weather sugarWebbPerichaetial leaves differentiated, larger than lower leaves, from broadly sheathing base rather abruptly narrowed into squarrose or flexuose apex. Setae yellowish, straight; capsules incurved, longitudinally furrowed, without or weak strumae, yellow to purplish along ribs and around the mouth. rays weather reportWebblength of the vegetative leaves, forming a sheath around the seta, outer perichaetial leaves in several series, longer and more attenua-ted towards the middle of the perichaetium. Seta exceeding the tips of the perichaetial leaves by 1-3 mm or more, brownish, somewhat twisted, erect. Capsules not seen. (Figure 1) rays weatherweather sugar mountainWebbplano-convex throughout, making the leaves stiff and rigid. Additionally, the perichaetial leaves are gradually long acuminate and are similar to the vegetative leaves. These diagnostic traits exclude the identity of this spe-cies with Grimmia alpicola var. rivularis fo. acutifolia. The type material of Grimmia alpicola var. rivularis rays weather snake mountain