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Published In: Flora Novae-Zelandiae 2: 75. 1854. (Fl. Nov.-Zel.) Name publication detailView in Biodiversity Heritage Library

Project Name Data (Last Modified On 3/16/2009)
Acceptance : Accepted
Project Data     (Last Modified On 5/4/2009)
General Reference:

Illustration & Map     (Last Modified On 5/4/2009)
Illustrations: Racomitrium crispulum (Hook. f. & Wilson) Wilson (Figs. 1–16.)
Map: Racomitrium crispulum (Hook. f. & Wilson) Wilson (Distribution in China)

Distribution     (Last Modified On 5/4/2009)
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).


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8. Racomitrium crispulum (Hook. f. & Wils.) Hook. f. & Wils. 爪哇砂藓    zhao-wa sha xian
Dryptodon crispulus Hook. f. & Wils., Fl. Antarct. 1: 124. pl. 57 f. 9. 1844. Type. New Zealand: Campbell Island, on alpine rocks, J. D. Hooker s.n.
Racomitrium angustifolium Broth., Symb. Sin. 4: 46. 1929. Type. China: Yunnan, Wei-xi Co., Handel-Mazzetti 9489 (holotype H). Synonymized by Gangulee 1972.
Plants medium-sized to rather large, up to 4 cm long, brownish green, in dense tufts. Stems repeatedly bifurcately branched; central strand absent. Leaves imbricately appressed when dry, erect-spreading when moist, linear-lanceolate, 2.2–2.7 mm long, not clearly keeled above, with short, smooth, not dentate hyaline hair-points, sometimes hair-points absent; margins recurved on one side; costa slender, percurrent; upper leaf cells shortly rectangular, smooth, sinuosely thick-walled, bistratose (rarely tristratose) at margins; median cells rectangular to elongate-rectangular, 12–30 µm × ca. 6 µm; basal cells elongate-rectangular, 30–50 µm × 6–7 µm, strongly sinuosely thick-walled; alar cells not differentiated, with only a row of 12–20 differentiated cells on the basal margins, hyaline, with straight walls. Perichaetial leaves broader at base, without hair-points. Setae erect, ca. 5.5 mm long; capsules oblong-ovoid, ca. 1.3 mm long; peristome teeth linear-lanceolate, divided to the low part; basal membrane present. Spores spherical, 9–13 µm in diameter, finely papillose.


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