Tropicos | Name - !Schizymenium campylocarpum (Arn. & Hook.) A.J. Shaw

Cent. Amer. Moss > Bryaceae > Schizymenium > Schizymenium campylocarpum

Choose Project down

English

!Schizymenium campylocarpum (Arn. & Hook.) A.J. Shaw

Search in Muséum national d'Histoire naturelle

Search in Type Specimen Register of the U.S. National Herbarium

Search in African Plants Database at Geneva Botanical Garden

African Plants, Senckenberg Photo Gallery

Project Name Data (Last Modified On 2/24/2011)

Acceptance : Accepted

Project data (Last Modified On 2/24/2011)

Discussion:

Schizymenium campylocarpum has inclined, cylindrical capsules that are often asymmetrically upturned near the mouth. Its peristome is single and consists of a smooth endostome that has a low basal membrane, linear segments, and cilia either absent or rudimentary. This species has a persistent annulus and often the basal membrane just exceeds the height of annulus. The basal membrane illustrated by Sharp et al. (1994) and Churchill and Linares (1995) for S. campylocarpum is much higher than that seen in Central American material of the species and in that illustrated by Hooker (1837). Other distinctive features of S. campylocarpum include its paroicous sexual condition, narrowly ovate-lanceolate upper leaves, and rectangular to subquadrate basal leaf cells. The variation in leaf marginal serration in this species is too great to be used as a distinguishing feature. As in other members of the genus the lower, more reduced leaves have weaker marginal serrations than the upper leaves.

Zanten (1971) reported this species from Marion Island and gave it an expanded distribution that included southern African, Australasia, and Hawaii. However, his concept of the species included plants with papillose endostomial segments that seem better referred to S. bryoides Harv. ex Hook

Illustrations: Hooker (1837, Pl. 136); Bartram (1949, Fig. 69 A–C,); Zanten (1971, Fig. 13 1a–1e); Sharp et al. (1994, Fig. 398 l–o); Churchill and Linares (1995, Fig. 31 a–e). Figure 168 A–D.

Habitat: On soil over rocks, beneath overhanging rocks, and cliff sides; 1800–4600 m.

Distribution in Central America: GUATEMALA. Quezaltenango: Steyermark 34194 (F, FH); San Marcos: Steyermark 35544a (F, FH). COSTA RICA. Cartago: Gómez 19780 (MO); San José: Sullivan 474 (MO). PANAMA. Chiriquí: Allen 9069 (DUKE, MO, NY, PMA).

World Range: Mexico; Central America; Western and Northern South America; Subantarctic Islands; North-Central Pacific.

Export To PDF

Export To Word

Schizymenium campylocarpum (Hook. & Arnott in Hook.) Shaw, Bryologist 88: 29. 1985.

Weissia campylocarpa Hook. & Arnott in Hook., Icon. Pl. Rar. 2: 136. 1837. Mielichhoferia campylocarpa (Hook. & Arnott in Hook.) Mitt., J. Linn. Soc., Bot. 12: 322. 1869. Protologue: Peru. Surrucucho, Peru, Prof. W. Jameson.

Mielichhoferia campylotheca C. Müll., Syn. Musc. Frond. 1: 231. 1848. Protologue: Mexico. In monte Orizabae vulcanico. E regno Peruviano prope Surucucho a cl. prof. W. Jameson lectam Cl. Hooker habuit.

Mielichhoferia praticola Card., Rev. Bryol. 38: 3. 1911. Protologue: Mexico. Etat de Mexico: Ixtaccihuatl, prairies humides près des glaciers (Purpus, 1909, no 3711), (F, FH, MO).

Plants slender to medium-sized, shiny, yellow-green to brownish, in loose tufts. Stems to 30 mm high, red, simple or forked; rhizoids reddish brown, papillose-roughened. Lower leaves reduced, distant, erect-spreading, upper leaves crowded, 0.8–1.5 mm long, erect to imbricate, stiff, not contorted when dry, lanceolate to narrowly ovate-lanceolate, not or weakly decurrent; apices acuminate; margins plane, occasionally somewhat recurved above, serrulate to serrate above; costae ending near apex to percurrent; upper cells narrowly linear-rhomboidal to linear-vermicular, firm-walled, 50–140 x 6–8 μm; marginal cells narrower, basal cells rhomboidal, rectangular or subquadrate. Paroicous. Setae 15–25 mm long, yellowish orange, flexuose. Capsules inclined, 2–4 mm long, oblong-cylindric tapered at neck; annuli well-developed, of 2–3 rows of cells; opercula conic, apiculate, 0.5 mm long; exothecial cells elongate-rectangular, smooth, with wavy walls, stomata superficial; exostome absent, endostome smooth, hyaline to yellowish, basal membrane low, segments filiform, cilia absent or reduced to 1–2 cells. Spores 14–20 μm, lightly papillose.