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!Distichophyllum meizhiae B.C. Tan & P.J. Lin 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: Tropical Bryology 10: 55. f. 2, 8–12. 1995. (Trop. Bryol.) Name publication detail
 

Project Name Data (Last Modified On 3/20/2009)
Acceptance : Accepted
Project Data     (Last Modified On 5/5/2009)
General Reference:

Illustration & Map     (Last Modified On 5/5/2009)
Illustrations: Distichophyllum meizhiae B.C. Tan & P.J. Lin (Figs. 5–9.)
Map: Distichophyllum meizhiae B.C. Tan & P.J. Lin (Distribution in China)

Distribution     (Last Modified On 5/5/2009)
Distribution:
Habitat: on boulder; alt. 1300 m.
Distribution: endemic to China.

Specimens Examined     (Last Modified On 5/5/2009)
Specimens Examined:
Specimen examined: see the type cited above.

Notes     (Last Modified On 5/5/2009)
general taxon notes:

 

The strong dimorphism shown between the vegetative and gemmiferous leaves in this species is very striking. It is closely related to D. heterophyllum (Mitt.) Par. from Darjeeling, India. Both species show an evolutionary trend toward the development of morphologically dissimilar gemmiferous leaves. Unfortunately, both taxa are known from only gametophytic materials, and perhaps maintain their natural populations by asexual reproduction.

 

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6. Distichophyllum meizhiae B.-C. Tan & P.-J. Lin 贡山黄藓 gong-shan huang xian
Trop. Bryol. 10: 55. 1995. Type. China: Yunnan, Gong-shan Co., Du-long-jiang (river), alt. 1300 m, M.-Z. Wang 10040 (holotype PE).
 
Plants large, in lax tufts, flaccid. Stems tall, slender, sparsely branched, ascending, up to 4.5 cm long, 3 mm wide with leaves. Leaves erect-spreading to complanate, strongly dimorphic, vegetative leaves wrinkled when dry, broadly obovate to lingulate with a short narrow leaf base, 2.0–2.5 mm × 1.25–1.50 mm, the leaf apices broadly rounded with a short mucro measuring 40–50 µm long, the lower half of the lamina carinate; leaf margins entire below the apex, irregularly denticulate at the leaf mucro, wavy even when wet, with a narrow border consisting of 2–3 rows of thin to moderately thick-walled, linear cells; costae in vegetative leaves slender, ending well below the apex, often split distally into two branches, but becoming coarse and wide in gemmiferous leaves; laminal cells irregularly quadrate-polygonal, 22–33 µm wide, thin-walled, not collenchymatous, gradually becoming slightly smaller at the margins and apex, 13–22 µm wide, rectangular at leaf base, 56–101 µm × 18–27 µm; gemmiferous leaves broadly ovate, the upper portion of the lamina constricted into a rounded hood with numerous basally branched, filiform gemmae borne on the adaxial surface of the much expanded leaf costa. Autoicous? Perichaetial leaves small, about 0.3 mm long, ovate-lanceolate, acuminate, ecostate, with narrow border; archegonia numerous per bract, about the length of the perichaetial leaf. Sporophytes not seen.
 
 
 
 
 
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