6. Neckeropsis Reichardt   拟平藓属   ni ping xian shu

Reise Novara 3(1): 181. 1870.

 

Plants small or robust, yellowish green or dark green, sometimes slightly pink or blackish, more or less glossy, in loose or compact mats or pendulous tufts. Primary stems creeping, with brownish rhizoids; secondary stems to 10 cm long, ca. 5 mm wide with leaves, simple or irregularly to pinnately branched; branches complanately foliate, obtuse at the apex. Stem and branch leaves similar or slightly dimorphic; leaves usually oblong, broadly ovate-lingulate, asymmetric, strongly undulate above, sometimes longitudinally plicate or obliquely undulate, often truncate or obtuse or apiculate at the apex, narrowed at the base, often widely curved on distal side, straight or incurved on proximal side, sometimes slightly auriculate at the base; margins entire below, serrulate or irregularly serrulate above, sometimes forming submarginal borders or indistinct marginal borders; costae usually single, stout, reaching mid-leaf or above, rarely short, weak, absent or sometimes forked; upper leaf cells oval, oblate-rectangular, rhombic, or polygonal; median cells hexagonal or rhomboidal; basal cells rectangular or linear. Autoicous or dioicous. Perichaetia often on secondary stems or short branches; inner perichaetial leaves large, ovate-lanceolate, concave, sheathing at the base, acuminate above. Setae very short, often less than 0.5 mm long; capsules ovoid to shortly cylindrical; opercula conic at the base, with a short or oblique beak; annuli and stomata absent; peristome double; exostome teeth narrowly lanceolate, sometimes perforate, finely papillose; endostome segments often reduced, hyaline, papillose; basal membrane low; cilia absent. Calyptrae mitrate or cucullate, smooth or hairy. Spores spherical, light yellow or brown, finely papillose.

 

 

1. Leaf margins bordered by elongate cells............................................................................................................... 2

1. Leaf margins not bordered by differentiated cells................................................................................................ 4

2. Leaf borders 1 layer thick, sometimes upper leaf margins not bordered.................................. 1. N. boniana

2. Leaf borders 2–6 layers thick, borders nearly throughout leaf length............................................................ 3

3. Pseudoparaphyllia filamentous; intramarginal borders 3–5 cells wide, 2–3 layers thick........... 5. N. moutieri

3. Pseudoparaphyllia narrowly foliose; intramarginal borders 4–6 cells wide, 4–6 layers thick 9. N. takahashii

4. Leaves plane, not undulate................................................................................................................................... 5

4. Leaves strongly undulate...................................................................................................................................... 6

5. Leafy stems densely foliate, strongly glossy; leaf costae single, slender, ending in mid-leaf or sometimes short and double; basal leaf cell walls strongly thickened, porose.................................................. 6. N. nitidula

5. Leafy stems loosely foliate, somewhat glossy; leaf costae thick, reaching near the apex; basal leaf cell walls not porose...................................................................................................................................... 8. N. semperiana

6. Leaf apices rounded; costae single............................................................................................... 7. N. obtusata

6. Leaf apices truncate; costae single, sometimes forked.................................................................................... 7

7. Costae reaching near leaf apex............................................................................................................ 3. N. exserta

7. Costae usually vanishing in mid-leaf or below...................................................................................................... 8

8. Capsules exserted; setae ca. 2 mm long; inner perichaetial leaves ca. 1.5 mm long; leaf costae single or forked, ending ca. mid-leaf............................................................................................................ 2. N. calcicola

8. Capsules immersed; setae ca. 0.5 mm long; inner perichaetial leaves ca. 4.5 mm long; leaf costae often forked at the base, not reaching 1/3 the leaf length................................................................... 4. N. lepineana