632 



BECCABI. 



md vcfv rigid, very densely beset by very unequal, horizontal, and often 

 subseriate, or confluent spines, otherwise similar to those occurring on 

 the leaf-sheaths. Leaves 1.2 in long in the pinniferous part, and termi- 

 nated by a robust and strongly clawed cirrus; leaflets linear, very nu- 

 merous and closely set. equidistant, naked underneath, and furnished 

 above on the mid-costa, and on one nerve on each side of it, with a 

 few. but relatively robust, subspmy bristles; tbe margins are rather 



closely and appressedly spinulous; tbe petiole, which is 15 cm long, and 

 the rachis, are both strongly armed above with unequal spines; the medial 

 leaflets are 1!> to 20 cm long, and 8 to 10 mm broad. Male spadix about 

 l<» cm in length, narrowing gradually to a tail-like tip, with 7 or 8 tubular, 

 gradually diminishing, shortly imbricate, primary spatbes. Male partial 

 inflorescences short and dense. 



The type specimen of this variety (a male plant in the Kcw Herbarium) was 

 collected by I. LoKer in May, 1906, on the summit of Mount Batay at 1,380 in 

 elevation, near Montalban, Province of Ki/al, Luzon, (X<>. 7085 in Herb. Kew.). 



The variety differs from the type by its leaf-sheaths being very densely spinous, 



by its large, very rigid and also densely spinous ligule, and by its very narrow 

 S-nerved leaflets, the ',1 nerves bearing bristles on the upper surface. In the type 



the lijruie is membranaceous, brittle, ami much less spinous, ami the leaflets are 



bristly only on the mid-eosta above, while the hairs on the margins are more 



spreading. 



Calamus dimorphacanthus var. zambalensis Becc. var. now 

 A more robust plant than the type. Sheathed stem 4 cm in diameter 

 and perhaps at times more; naked canes 2.5 cm in diameter, with a 

 light-straw-colored very polished surface; leaf -sheath very densely spinous 

 as in the other forms; ligule not so long as in tbe type, densely covered 

 With spieiihe. Petiole robust and short, very densely spinous; the leaflets, 

 are wry numerous, very closely set, rigid, or papery-subcoriaeeous. nar- 

 rowly lanceolate; the medial ones 20 cm long or thereabouts, and 15 to 

 20 mm broad, naked beneath, and furnished above on the mid-costa 

 witb rigid. Bubspiny bristles; tbe side nerves are smooth; tbe margins are 

 Conspicuously ciliate with spreading spinules; tbe cirrus is. as usual in 

 Ibis species, robust and armed witb half-whorls of strong and tumescent 

 claws. Fruiting spadix 55 cm long in one specimen; primary spatbes 

 rather densely spinulous; partial inflorescences short, having few brandies 

 and these witb \\'\x spikelets. which are rigid and thickish; spathels and 

 involucrophore as in tbe other forms; involucre distinctly discoid, orbic- 

 ular. Hat or slightly convex. Fruit larger than in type, globose-ovoid, 

 13 mm long, about 10 mm broad, borne on a short but distinctly pedicel- 

 liform, cylindraceous, fruiting perianth; scales Bhining, arranged in 15 

 longitudinal series, slightly furrowed along the middle, brown with a 

 darker uniform margin all around, the point blunt. 



Luzon. Province of Zambaiee, Mount Tapulao, For. Bur. s',t> Outran d- 

 Merritt, December, l!n>7. on exposed peaks in the elfinwood, altitude about 2,000 



