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Published In: Bulletin de la Société Royale de Botanique de Belgique 38(Mém.): 13–14. 1899[1900]. (Bull. Soc. Roy. Bot. Belgique) Name publication detailView in Biodiversity Heritage Library
 

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Acceptance : Accepted
Project data     (Last Modified On 2/22/2011)
Discussion:

Bryum renauldii is an rheophilous species with distant, soft, obtuse, nearly entire leaves. Its upper marginal leaf cells are rectangular and somewhat longer than the irregularly quadrate inner cells and so the leaves appear to be weakly bordered. Bryum limbatum is also found in or along streams and is similar in aspect to B. renauldii, but it differs in having a well-developed border (to 5 cells wide) of long, linear, thick‑walled cells and serrate to serrulate leaf margins. Bryum incrassatolimbatum, another species with obtuse leaf apices similar to B. renauldii, has thin‑walled, lax, and bulging cells throughout and a multistratose leaf limbidium consisting of enlarged, thin‑walled, and bulging short‑rectangular cells.

Illustrations: Thériot (1936, Fig. 17); Ochi (1980, Fig. 43 A–D); Ochyra (1991, Fig. 1); Sharp et al. (1994, Fig. 356 h–j). Figure 152 A–C.
Habitat: On rocks and boulders in and along streams 1080‑1400 m.
Distribution in Central America: BELIZE. Cayo: Allen 18445 (BRH, MO).  HONDURAS. Comayagua: Standley 56066 (F); Yoro: Yuncker 7992 (MO, NY). COSTA RICA. Alajuela: Crosby 3611 (CR, MO); San José: Sarg (US).
World Range: Mexico; Central America; Caribbean, Western South America.

 

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 Bryum renauldii Röll ex Ren. & Card., Bull. Soc. Roy. Bot. Belgique 38(1): 221. 1899.

Protologue: Costa Rica. America centralis: Costarica, Sanchez prope San Jose, Sarg; herb. Röll (US).

 

Bryum obtusissimum Ren. & Card., Bull. Soc. Roy. Bot. Belgique 38(1): 222. 1899. Protologue: Costa Rica. America centralis: Costarica, Savanna prope San Jose, 4100 ped., in dejectu aquae Sarg; herb. Röll (US).

Hygrohypnum ellipticum Thér., Rev. Bryol. Lichénol. 9: 33. 1936. Protologue: Ecuador. Conocoto, dans un ruisseau, [Benoist] (n° 4.020) (synonymized by Ochyra, 1991).

Plants medium-sized, green to yellow‑brown in loose tufts to 2.5 cm high; rhizoids sparse. Leaves 1.5–2.5 mm long, distant, irregularly contorted when dry, spreading when wet, oval to suborbicular, weakly decurrent; apices obtuse to rounded; margins narrowly recurved below, not or faintly bordered above, entire or obscurely serrulate; costae subpercurrent, ending 2–4 cells below the apex; upper cells rhomboidal, thin but firm‑walled, 20–50 μm long, basal cells enlarged, bulging, rectangular, 40–90 μm long, thin‑walled, upper marginal cells rectangular, somewhat longer than the inner cells. Sexuality and sporophytes unknown.

 

 

 
 
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