782 BULLETiN DE l'herbier BoissiER. Plagiochasma. 



lulis 8-9 obconicis, sexseriatis circumdato; cellulae epidermidis trigonis 

 magnis incrassata?. Squamse posticce rosecB. tenerrimce, oblique lunatse. ad 

 V2 acute bifKUe laciniis lanceolatis, margine repando-angulata? vel breviter 

 lobulatae, anguli cellulis clavatis, facile deciduis, hyalinis coronati. Carpo- 

 cephala subsessilia, pedunculo brevissimo, apice dense breviterque bar- 

 bato; paleae lanceolata? cellulis clavatis ornalaj; discus centraUs capituli 

 concavus, 3-4 lobatus, lobis divergentibus curvatim adscendentibus, in 

 acumen breve erectum et obtusum abeuntibus. Sporae et Elateres? (cap- 

 sulae haud maturse.) Androecia rotunda, flori fem. approximata. 

 Hab. Abyssinia, Keren, in monte Deban. (Beccai'i). 



12. P. appendiculatum L. et L. Pug. lY. p. 14. 



Mouoica, maxima, pallide virens, subtus purpurea. Frons 4 cm. longa, 

 12 mm. lata, saepe dichotome ramosa. tenuis, antice plana, alis attenuatis 

 adscendenlibus, crispato-plicatulis, crenatis. Stomata magna, poro amplo, 

 cellulis 6 obconicis quinque seriatis circumdato. Celliilse epidermidis 

 maxime (trigone vel trabeculatim) incrassatse. Squamae posticse magnse, 

 marginem frondis superantes, basi purpureae, lale semilunatse, appendi- 

 culis (seepe geminatis) hyalinis, magnis, basi maxime constrictis, cordatis 

 vel late ovatis, obtusis, integerrimis. Carpocephala brevipedunculata vel 

 sessilia, maxime barbata, paleis hyalinis, anguste lanceolatis, hic illic 

 denlatis,disco centrali capituli emarginato. bi- vel trilobato, lobis curvatim 

 erectis cornutis. Sporae 51 ]x. Elateres 250 ^. bispiri spiris laxe tortis, 

 Androecia rotunda, flori femineo approximata. 



Hab. Himalaya, Nepal (Wallich), Tisa (Duthie), Saharanpor (Gamble), 

 Sine loco (Stolitzka), Manila (WaUis). 



Appendiculis giganteis rotundis primo visu distinguenda. 



- 13. P. intermedium Ldbg et G. Syn. Hep., p. 513. 



Dioica, dense caespitosa, antice pallide virens, postice purpurea. Frons 

 usque ad 2 cm. longa, 5 mm. lata, ligulala, ex apice innovata, rare dicho- 

 toma. Costa angusta, humiUs. Stomata magna, convexa, poro 8 cellulis 

 obconicis triseriatis circumdato; epidermidis cellulce parietibus validis, 

 haud trigone incrassatis. Squamae posticee magnse, imbricatae, purpureae, 

 geminatim appendiculatae, appendiculis basi valde constrictis, o^;afo-obIon- 

 gis, acuminatis acutis integerrimis. Pedunculus brevis, alro-purpureus, 

 10-12 mm. longus, apice barbatus, paleis linearibus, brevibus hyalinis. 

 Capitula parva, quadriloba, vertice concava, lobis cornutis cornubus 

 erecto-recurvis conniventibus. Sporae 60 {j. late alato-reticulatae. Elateres 



79 



