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Published In: Memoirs of the American Academy of Arts and Science, new series 4: 172. 3. 1849. (Mem. Amer. Acad. Arts, n.s.) Name publication detailView in BotanicusView in Biodiversity Heritage Library
 

Project Name Data (Last Modified On 4/12/2011)
Acceptance : Accepted
Project data     (Last Modified On 4/12/2011)
Discussion:

Dicranum rhabdocarpum is near D. flagellare in size, but that species has crispate leaves, and quadrate, non-porose upper leaf cells. Dicranum peruvianum and D. frigidum are much larger species. The shortly acuminate leaf apices of D. rhabdocarpum are also distinct. In D. frigidum the leaf apices are long and narrowly acuminate, while in D. peruvianum they are broadly acute and frequently cucullate. Sullivant's (1849, reproduced in Grout 1937) illustrations of the leaf apex of D. rhabdocarpum are especially good.

Illustrations: Sullivant (1849, Pl. 3 1–13); Grout (1937, Pl. 46 G 1–12); Bartram (1949, Fig. 29 A–D); Lawton (1971, Pl. 32 1–3).
Habitat: On soil; 2400–3768 m.
Distribution in Central America: GUATEMALA. Quezaltenango: Standley 67749a (F, FH).
World Range: Northwestern and Southwestern U.S.A.; Mexico; Central America; Caribbean.

 

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Dicranum rhabdocarpum Sull., Mem. Amer. Acad. Arts n. ser. 4: 172. 1849. Type. U.S.A., New Mexico, Santa Fe, Fendler s.n.

 

Plants small, pale yellowish green; stems erect, 1–2 cm (reported to 5 cm) long. Leaves crowded, evenly spaced, suberect to nearly straight when wet, erect-spreading to weakly flexuous when dry, ovate-lanceolate, 3–5 mm long, broadly and shortly acuminate; margins plane, serrulate above, marginal cells not differentiated; costa ending just below the apex, toothed dorsally above; cells incrassate and porose, upper cells elongate to irregularly rhomboidal; basal cells rectangular; alar cells forming distinct groups, reddish brown, shortly rectangular, thin-walled. Setae single, 1.5–2.0 cm long, yellow or light reddish; capsules, erect, cylindrical, 3.0–3.5 mm long; peristome teeth reddish brown; opercula 1.5–2.0 mm long.

 

 

 
 
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