Tropicos | Name - !Racomitrium crispulum (Hook. f. & Wilson) Hook. f. & Wilson

China Moss > Grimmiaceae > Racomitrium > Racomitrium crispulum

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!Racomitrium crispulum (Hook. f. & Wilson) Hook. f. & Wilson

Search in Muséum national d'Histoire naturelle

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Project Name Data (Last Modified On 3/16/2009)

Acceptance : Accepted

Project Data (Last Modified On 5/4/2009)

General Reference:

Gao, C., M. R. Crosby & S. He. 2003. Grimmiaceae–Tetraphidaceae. 3: viii+141. In Moss Fl. China. Science Press & Missouri Botanical Garden, Beijing, New York & St. Louis.

Illustration & Map (Last Modified On 5/4/2009)

Illustrations:

Racomitrium crispulum (Hook. f. & Wilson) Hook. f. & Wilson (Figs. 1–16.)

Map:

Distribution (Last Modified On 5/4/2009)

Distribution:

Habitat: on rocks or soil in forests of high mountains.

Distribution: China, Japan, India, Sri Lanka, Indonesia, New Guinea, Australia, New Zealand, Hawaii, Africa, and South America.

Specimens Examined (Last Modified On 5/4/2009)

Specimens Examined:

Chinese specimens examined: Yunnan: Da-li Co., unknown collector 13255 (HKAS); Gong-shan Co., M.-Z. Wang 9527a (PE), M. Zang 922c (HKAS).

Notes (Last Modified On 5/4/2009)

general taxon notes:

The characteristics of Racomitrium crispulum are: 1) leaves linear-lanceolate; 2) margins recurved only on one side, bistratose in cross section; 3) leaf cells nearly elongate-rectangular throughout, strongly sinuosely thick-walled; and 4) the basal margins consisting of only a row of 12–20 hyaline, differentiated cells. While we agree that R. angustifolium is synonymous with R. crispulum, Gangulee (1972) described the Indian R. crispulum as having a colored alar group with 2–3 rows of differentiated cells. This is different from what R. angustifolium has on the basal margins. After studying R. crispulum, including its varieties and related species, Lawton (1973) circumscribed the species complex with a row of 10 or more differentiated cells on the basal margins, but sometimes with 2 rows of differentiated cells at the base and occasionally a few cells more or less inflated. This exception may occur in some varieties, but certainly not in R. angustifolium nor in R. crispulum as circumscribed by Frisvoll (1988).