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!Racomitrium joseph-hookeri Frisvoll Search in The Plant ListSearch in NYBG Virtual HerbariumSearch in Muséum national d'Histoire naturelleSearch in Type Specimen Register of the U.S. National HerbariumSearch in Virtual Herbaria AustriaSearch in JSTOR Plant ScienceSearch in SEINetSearch in African Plants Database at Geneva Botanical Garden Decrease font Increase font Restore font
 

Published In: Gunneria 59: 197. 1988. (Gunneria) Name publication detail
 

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 joseph-hookeri Frisvoll (Figs. 11–17.)
Map: Racomitrium joseph-hookeri Frisvoll (Distribution in China)

Distribution     (Last Modified On 5/4/2009)
Distribution:
Habitat: on rocks in alpine mountains; alt. 3400–3800 m.
Distribution: China, Japan, Bhutan, and Nepal.

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

 

Chinese specimens examined: Sichuan: Tian-quan Co., Mt. Erlang, C. Gao et al. 17777 (IFSBH). Xizang: Bo-mi Co., Y.-G. Su 918 (HKAS). Yunnan: Bi-jiang Co., M. Zang 5171 (HKAS, IFSBH); Mt. Gaoligongshan, M. Zang 5880 (HKAS).
 

Notes     (Last Modified On 5/4/2009)
general taxon notes:
Racomitrium joseph-hookeri is mostly characterized by its obscure, bulging leaf cells (pseudopapillose) and bistratose upper leaf margins. Leaf cells are generally elongate-rectangular and alar cells are not differentiated. The length of hyaline hair-points is variable in this species.

 

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15. Racomitrium joseph-hookeri Frisvoll   霍氏砂藓   huo-shi sha xian
Gunneria 59: 197. 1988. Type. Sikkim: J. D. Hooker 322.
 
Plants medium-sized, up to 3.5–4.0 cm long, yellowish green above, dark brown or blackish below, in loose tufts. Stems creeping or ascending, irregularly or subpinnately branched; central strand absent. Leaves imbricately appressed when dry, erect-spreading when moist, narrowly ovate-lanceolate to lanceolate, keeled above, 2.4–2.9 mm long, hyaline hair-points smooth, not dentate, somewhat flexuous, short to long; margins recurved on both sides, up to 1/2 the leaf length on one side, shortly recurved on the other side; costa thick at base, percurrent; upper leaf cells bistratose at margins, rectangular to elongate-rectangular, 11–35 µm × 5–9 µm, sinuosely thick-walled, with pseudopappillae (bulging cell walls), obscure; median cells similar to the upper cells; basal cells rectangular to elongate-rectangular, 30–50 µm × 8–9 µm, sinuosely thick-walled, bulging; alar cells not differentiated, consisting of only a row of 4–7, rounded rectangular cells, with straight and somewhat thick walls. Sporophytes not seen.
 
 
 
 
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