- 45 - 



main rachis to ca 5 mm. long, long-cuspidate-acuminate, entire 

 or obsoletely denticulate, ciliate or ciliolate at the obliquely cor- 

 date base, the outer base produced, slightly hamateincurvate; 

 of the branches growing gradually shorter, with the inner base 

 rounded, the outer base auriculate-cordate, not incurved, the cusp 

 ca 1/3 — 1/2 ^s long as the blade. Spikes solitary or 2-4-nate, 

 ca 1 — 4 cm. long by 1 — 3 mm. diam., straight, curved or flexuose ; 

 sporophylla isomorphous, imbricate, ascending, at length spread- 

 ing, triangular-ovate, acute, keeled, very minutely denticulate, 

 the largest ca 2 mm long; macrospores yellowish-white, rugulose, 

 the rumples short or elongate, straight ov flexuose, simple or 

 branched, free or connected, the apical ribs encircled by a ring- 

 shaped crest ; microspores yellow or palb-orange, provided with 

 bacilliform or stipitate-capitate projections. - The description 

 is taken from a spécimen cultivated in the Buitenzorg Gardens. 



Forma angustior: Ultimate branchlets short, to ca 4 cm. long, 

 (5 — 10 mm. broad ; spikes terminal on the branchlets. 



Forma latior: Ultimate branchlets elongated, ca 4-8 cm. 

 long, 10-16 mm. broad; spikes partly terminal, partly in the 

 axils of the higher branches, and then often once or twice forked 

 at the base. 



Bornéo. 



iîela&'ilieila lonsifiifîpei-i. r,.i.i\KÎ, 



Hete7^ )phylh(m, Monostelicae, a^ Ascendentes.— Gaules e basi 

 repente erecti, adulti ca 35 — 60 cm longi, parte inferiore simpli- 

 ces, usque ad 30 cm longi, in sicco fusci et irregulariter an.^ulosi, 

 parte supei'iore deltoidei vel ovati, 3-pinnati, rachide primaria 

 foliis lateralibus inclusis ca 8-10 mm lata; pinnae inferiores 

 saepe patentes, lanceolatae, usque ad 15 cm longae; ramuli 

 ultimi usque ad 31/2 cm longi et 31/2 -^ nim lati. Folia hetero- 

 marpha; folia lateralia ^/4 — ^5 partium infei-iorum stipitis inae- 

 quilatera, erecta vel suberecta, remota, late oblonga, obtusiuscula, 

 semifacie interiore basin versus minutissime denticulata, basi 

 interiore auriculato cordata, auricula rotundata vel hamato-incurvata, 

 semifacie exteriore integerrima vel subintegerrima, basi truncato- 

 rotundata; folia lateralia partis ramosae patentia: laieralia 

 rachidis primariae maxima, fulliis stipitis similia sed leviter 

 falcata, indistincte spuiie venulosa, usque ad 5 mm longa et 3 



