Home Moss Flora of China
Name Search
About
Moss Checklist
Moss Flora
Guide to Authors
Participants
Glossary
Wijkia H.A. Crum 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
 

Publicado en: The Bryologist 74(2): 170–174. 1971. (Bryologist) Name publication detail
 

Datos del Proyecto Nombre (Last Modified On 4/2/2009)
Aceptación : Accepted
Datos del Proyecto     (Last Modified On 4/2/2009)
General Reference:

Notas     (Last Modified On 4/2/2009)
general taxon notes:

 

The genus Wijkia is separated from Brotherella by the strongly differentiated stem and branch leaves and by the distinctly thickened vertical walls of exothecial cells. According to Buck (1986), the genus includes about 29 species in the world. At present, four species are known from China.
 
 

 

Export To PDF Export To Word

 

22. Wijkia (Mitt.) Crum   刺枝藓属   ci zhi xian shu
Bryologist 74: 170. 1971. Acanthocladium Mitt., Proc. Linn. Soc. New South Wales 7: 102. 1883, hom. illeg.
 
Plants slender or robust, more or less stiff, usually forming weft, light green or yellowish green, sometimes brownish yellow, glossy. Stems creeping, with loose rhizoids, irregularly 1–2-pinnately branched; branches patent-spreading or complanate, sometimes slightly curved; apices of stems and branches straight; paraphyllia few. Leaves appressed when dry, erect, patent-spreading when moist; stem and branch leaves differentiated; stem leaves ovate, concave, acuminate or abruptly forming a long filiform acumen; margins entire or serrulate above; costae double, very short or none; leaf cells narrowly rhomboidal, thin-walled, usually smooth, rarely unipapillose, or prorate; basal cells often golden yellow, thick-walled, pitted; alar region consisting of one row of evidently differentiated cells, large, elongated-oblong, golden yellow or brownish yellow, sometimes hyaline, the other alar cells small, thin-walled, hyaline short; branch leaves smaller, acuminate, margins serrate. Dioicous. Inner perichaetial leaves erect, not plicate, sheathing at base, slender and long acuminate toward apex, margins serrate above. Setae slender and elongate, purple, smooth; capsules horizontal, cylindrical, slightly arcuate, constricted when dry or mature; opercula conic, short or long rostrate above, rarely rounded obtuse with a short tip; annuli differentiated; peristome double; outer surface of exostome teeth cross-striate below, papillose above, inner surface highly trabeculate; endostome segments as long as the teeth; basal membrane keeled; cilia 1–2. Calyptrae not seen. Spores variable in size, irregularly rounded, yellowish green, smooth.
 

Export To PDF Export To Word
1. Stem leaves gradually narrowed to a falcate, acuminate acumen....................................1. W. deflexifolia
1. Stem leaves suddenly narrowed into a long, slender, straight or twisted acumen.................................2
2. Plants large, stem leaves longer than 1.75 mm, broadly obovate, strongly constricted into a long, filiform leaf acumen, the acumina nearly equal in length to lamina.................................. 4. W. tanytricha
2. Plants small, stem leaves less than 1.75 mm long, broadly ovate or oblong-ovate, moderately constricted into a small and slender leaf acumen; the acumina less than half the length of lamina......... 3
3. Plants without erect, slender shoots; stem leaf cells elongate to linear, more than 100 µm long, thin-walled; stem leaf apices denticulate......................................................................................2. W. hornschuchii
3. Plants with several erect, slender shoots; stem leaf cells oblong to elongate, less than 100 mm long, firm to thick-walled; stem leaf apices nearly entire.............................................................3. W. surcularis
 
 
 
© 2014 Missouri Botanical Garden - 4344 Shaw Boulevard - Saint Louis, Missouri 63110