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Horikawaea Nog. Search in The Plant ListSearch in Index Nominum Genericorum (ING)Search in NYBG Virtual HerbariumSearch in JSTOR Plant ScienceSearch in SEINetSearch in African Plants Database at Geneva Botanical Garden Decrease font Increase font Restore font
 

Published In: Journal of Science of Hiroshima University, Series B, Division 2 (Botany) 3: 46. 1937. (J. Sci. Hiroshima Univ., Ser. B, Div. 2, Bot.) Name publication detail
 

Project Name Data (Last Modified On 12/16/2011)
Acceptance : Accepted
Notes     (Last Modified On 12/14/2011)
general taxon notes:
There are three species of Horikawaeain the world (Crosby et al. 2000; M.-C. Ji & Enroth 2006); all of them are currently known in China.

 

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1. Horikawaea Nog.   兜叶藓属   dou ye xian shu
J. Sci. Hiroshima Univ., Ser. B, Div. 2, Bot. 3: 46. 1937.
 
Plants medium-sized to rather large, rigid, yellow, yellowish green, or golden brown, glossy, forming long pendent, loose mats. Primary stems slender, elongate, creeping, with reddish rhizoids at the base; leaves scale-like, ovate, shortly acuminate, strongly concave, ecostate; secondary stems erect or erect-patent, simple, rarely branched. Leaves in 2 ranks, appressed when dry, elongate-ovate, concave, shortly acuminate, symmetric, slightly decurrent at the base; margins entire, incurved; costae slender, single, only to mid-leaf; leaf cells elongate-rhomboidal, thin-walled, smooth, becoming shorter toward apex; alar cells clearly differentiated, enlarged, subrectangular, thick-walled, porose, orange-yellow. Gemmae fusiform on secondary stems. Dioicous. Inner perichaetial leaves broadly ovate to lanceolate, sheathing at the base, abruptly long acuminate. Perichaetia on lateral branches. Setae elongate; capsules exserted, oblong-ovoid, erect, slightly wrinkled when dry; opercula conic, rostrate; stomata present; peristome highly reduced. Calyptrae cucullate. Spores spherical or tetrahedral, finely papillose.
 
 

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1. Leaf apices plane, not cucullate; costae indistinct or double, not reaching 1/2 the leaf length; alar cells not differentiated.................................................................................................................................. 3. H. tjibodensis
1. Leaf apices cucullate; costae single, rarely double, reaching 1/2 the leaf length or beyond; alar cells differentiated...................................................................................................................................................................
.................................................................................................................................................................................... 2
2. Secondary stems 2–4 mm wide with leaves; flagelliform branches often present; stem and branch leaves strongly appressed, closely complanate............................................................................................ 1. H. dubia
2. Secondary stems 4–7 mm wide with leaves; flagelliform branches rare; stem and branch leaves loosely complanately arranged........................................................................................................................ 2. H. nitida
 
 
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