- 34 - 



foliis lateralibus inclusis 9—12 mm latis; ramuli ultimi saepe 

 1 — 3^2 cm loDgi et 6—10 mm lati. longissimi latissirai sunt. Folia 

 imdique heteromorpha ; folia lateralia lineari-oblonga, subfalcata, 

 SLibaequilatera, acuta vel subacuta, semifacie superiore pellucido- 

 marginata, minute serrulata, semifacie inferiore pellacido-marginata, 

 integerrima, basi superiore rotundata vel late rotundato-cuneata, 

 basi infei'iore rotundato-cordata vel -truncata, latere aligulari non 

 spurio-venulosa, costa gracili ; folia lateralia caulina horizontalia, 

 plus minusve remota ; folia lateralia ramuloi'um ultimorum patentia 

 vel magis ascendentia, contigua, usque ad 5 mm longa et 2 mm 

 lata; folia intermedia erecta, oblonga, falcato incurvata, cuspidata, 

 utrique minute serrulata, sed margine interiore basin versus in- 

 tegerrima, basi interiore rotundata vel rotundato cuneata, basi 

 exteriore conspicue producla. auriculato-cordata, auricula hamato- 

 incurvata; folia intermedia eaulina contigua vel remota; folia 

 inteimedia l'amulorum ultimorum imbricata, usque ad 3 mm longa, 

 cuspide quam lamina 2 — 3-plo bieviore. Spicae tetragonae, ca 1 — 

 3^2 cin longae, ca 2^/2 mm crassae, solitariae vel 2 — 4-nae; 

 sporophylla ovata, acuminata, erecto-patentia, demum patentia, 

 usque ad 1^/2 ^'^^^^ longa, ciiriuata, minute serrulata; macrosporae 

 albidae, in macrosporangiis saepe 2-nae, graciliter rugulosae, apice 

 crista almuliformi cincta, costis apicalibus deficientibus ; microsporae 

 probabiliter desunt. 



Bornéo [Gunong Kenepai, Rallier No. 1725). 



Nela;;îiieEla iiarvifrimij^. r. .J. r. II. 



Hete)'ophyllum^ Monostelicae, a^ Caylesctnte^. — Cciuleii e basi 

 decumbente erecti, ca 20 cm vel plus alti, parte inferiore (bre- 

 viore) simplices, ca 1 mm crassi, in sicco irregulariter angulosi et 

 sulcati, parte superiore ramosi, in circuitu lanceolato-ovati, acumi- 

 nati, ca 15 cm vel plus longi ; pinnae suberectae, superiores sim- 

 plices vel furcatae, inferiores usque ad 10 cm longae, pinnatae; 

 pinnulae suberectae, simplices vel furcatae; ramuli ultimi ca II/4 

 — 21/2 cm longi, foliis lateralibus inclusis ca 31/2 — 41/4 mm lati. 

 Folia caulina subisomorpha, erecta, satis remota, oblonga, ca 3 mm 

 longa, breviter cuspidato-acuminata, integerrima, basi oblique sub- 

 cordato-rotundata ; folia partis ramosiae heteromorpha; folia lateralia 

 plus minusve ascendentia; lateralia rachidisprimariae approximata, 

 falcato-oblonga, ca 41/2 — 5 mm longa, ca duplo angustiora, obtusiuscu- 



