210 103. SELAaiNELLA. A^ PLEIOSTELIOAE. 



(180) S. Hymaui, Mieron., in Engl. Bot. Jahrb., L, 39. 



Shoots erect from a creeping base, 50 — 100 cm. long, the stem finely 

 asperulo-verruculose, the lower part simple, subcompresso-terete, when 

 dry irregularly grooved, yellowish or stramineous, 3-stelical, sparingly 

 foliate, the upper part branched, ovate, to 40 cm. long and 30 cm. broad; 

 pinnae 5—7 on a side, elongate, to 25 cm. or more long, copiously pinnate; 

 pinnulae ascending, contiguous or nearly so, simple or the lower rarely 

 forked; ultimate branchlets 8 — 5 mm. broad including the lateral leaves. 

 Leaves entire ; leaves of the stipe remote, isomorphous, sublanceolate-deltoid, 

 acute, straight or subfalcate, to 4Vs mm. long by lV-2 ram. broad, the 

 base adnate, narrowly 2-auriculate-cordate, the auricles hamate-incurvate, 

 or the inner base deflexo-calcarate and the outer base more bluntly 

 rotundate-auriculate ; leaves of the branches heteromorphous ; axillary leaves 

 2-auriculate (hardly hastate) at the base; lateral leaves horizontal or sub- 

 horizontal on the secondary rachises, ascending on the branchlets; of the 

 principal rachises subremote, obliquely deltoid-lanceolate, subfalcate, unequal- 

 sided, acuminate or acute, the upper side pellucid-margined, rotundate- 

 cuneate in the lower part, provided with a exceedingly minute, erected, 

 acute spur-shaped auricle at the very base, the lower side truncate and 

 dilated at the base, the largest leaves 4 mm. long by 2 mm. broad ; of the 

 branchlets smaller, ascending, contiguous, without a spur-like auricle, more 

 falcate, the largest leaves 3V3 ram. long; intermedial leaves erect; of the 

 principal rachises sublanceolate-deltoid, falcate or straight, acuminate, sub- 

 pellucid-margined, the base very obliquely attached, cuneate on the inner side, 

 much produced and rotundate-adnate on the outer side, the largest leaves 

 2Vj mm. long by % mra. broad; of the branchlets smaller. Spikes square, 

 IVj — eVa cm. long, to 2 mm. diam. ; sporophylla isomorphous, deltoid-ovate, 

 acuminate, entire, somewhat keeled, to 2V2 ram. long; microspores whitish 

 or stramineous-white, densely verruculose on the basal side; macro- 

 spores 



New Guinea. . 



(181) S. velutina, Ces., Fel. Becc. Polin., 9; »S. motiensis, Hieron., 

 in Engl. & Prantl, Nat, Pfl. Fam., T, 702; S. aspericaulis, A. Br., MS. in 

 Herb. Berol. 



Shoots erect, 60 — 90 era. long, the stera 3-stelical, thinly velutinous, the 

 hairs deciduous, leaving the stera rough by their persistent bases; secondary 

 rachises to 6 ram. broad including the lateral leaves, branched; branchlets 



