26 



ART. 4. — SHÜTAI OKAMURA 



7-^1 



densiusculis. Caulis primarius repens, filiformis ; secundarius longe 

 dépendons, snbstrictus, usque ad 10-20 cm. longus, irregulariter et 

 laxe subpinnatim ramosus, sectione ellipticus, c. 0.24-0.28x0.16- 

 0.2 mm. magnus, fasciculo central! nullo, reti centrali hyaline, ce- 

 Uulis hexagonis c. 15-20// magnis, tenellis, cellulis periphericis c. 

 ö-4-seriatis minoribus rubiginosis valde incrassatis ; ramis pendulis, 

 c. 1-6 cm. longis, apice longe vel brève attenuatis, simplicibus vel 

 parce (1-5) ramulosis ; ramulis c. 1 cm. longis, patentibus, apice 



attenuatis vel obtusis ; ramis ramulisque 

 sicca apice substrictis arcuatis vel 

 hamulosis sed haud circinato-incurvis ; 

 caulibus secundariis ramis ramulisque 

 densiuscule foliosis teretibus ; caulis 

 secundarius floriferous saepe brevis, 

 simplex vel parce ramosus. Folia sicca 

 adpressa argute longitudinaliter plicata, 

 madida erecto-patentia, valde concava, 

 profunde plicata, basi breviter decur- 

 rentia, oblongo-lanceolata apice breviter 

 attonuata vel acuta, summo apice cana- 

 liculata, c. 1.2-1.9 mm. longa et c. 

 0.5-0.8 mm. lata, marginibus late planis, 

 apice minute serrulatis ; nervo nullo ; 

 cellulis laevissimis, valde chlorophyllosis, linearibus, c. 30-56// 

 longis et c. 3-4// latis, marginalibus basilaribus pluriseriatis (c. 12) 

 quadratis incrassatis c. 9-12/^- magnis, basilaribus infimis per totam 

 latitudinem folii lutescenti-fuscis. Inßorescentia dioica, utriusque 

 sexus in cauligenis vel ramuligenis ; flores masculi geminiformes ; 

 folia perigonialia concava, ovali-oblonga, apice cuspidata, enervia ; 

 antheridia c. 10, paraphysibus numerosis. Bracteae perichaetü 



X20 



Fig. 10. Leucodon 

 perdepéndens. 



A. Folia ( X 20) ; B. Sporangia 

 (xlO). 



