Filices^] 



FLORA OP NEW ZEALAND. 



37 



3-18 inches long, tufted, linear-lanceolate, pinnate, the apex often dilated or running out into a linear tail. Rachis 

 glabrous or pubescent. Stipes short. Pima |~2 inches long, spreading ; upper confluent or adnate by a broad 

 base, linear-oblong or ovate-oblong, blunt; the lower smaller, shortly stipitate, cordate, truncate, rounded or sub- 

 dilated at the base, sharply toothed, glabrous or pubescent below; the veins prominent when dry, forked, united 

 by a transverse branch. Sori short, linear or crescent-shaped, on the back of the pinnas, forming one or two 

 rows parallel to one another on each side of the costa. Involucre linear, placed on an arching veinlet that joins 

 two veins, opening towards the costa. (Named in honour of S. Doody, an old author on English Crypt. Botany.) 



1. Doodia caudata, Br. Prodr. A. Rich. Flor. A. Omm. Prodr. Hook. Exot. Flor. t. 25. D. 

 Kunthiana, Until. Prodr. Flor. Ins. Nor/. Gaud, in Freyc. Voy. Sot. p. 401. t. 14. A. Cwm, Prodr. 

 D. aspera, Br. Prodr. A. Rich. Flor. A. Omm. Prodr. 



Hab. Abundant on dry hills from the Bay of Islands to Banks' Peninsula. (Cultivated at Kew.) 

 I am quite unable to detect such differences amongst the New Zealand specimens of Doodia as would justify 

 my retaining P. Kunthiana or D. aspera even as varieties of B. caudata, which is far from being a very variable 

 plant, considering the Natural Order to which it belongs. D. aspera was founded chiefly on the roughness of the 

 rachis and stipes, which are often smooth in one part and glabrous in another; D. Kunthiana, on the cordate base 

 of the lower pinnas. 



Gen. XVII. POLYSTICHUM, Sc/tott. 



Sori globosi, dorsales, medio venarum venularumque inserti. Involucrum orbiculare, peltatim medio 

 sori affixum, substipitatum, undique liberum. 



A very large genus of Ferns, found in all parts of the globe, and of which the species also are very widely 

 distributed and variable.— Fronds bi-tri-pinnate, coriaceous, lobed, serrate or spinulose. Sori round, placed on the 

 middle of the veins, at the back of the pinnules, remote from the margin. Involucre orbicular, peltately attached by 

 a short stalk to the centre of the sorus, its edges free all round. (Name from iroXvs, many, and or^os, a row; from 

 the numerous sori.) 



1. Polystichum coriaceum, Presl; rhizomate elongato repente squamato, fronde pinnata v. bipinnata 

 corlacea ovato-oblonga deltoidea, pinnis superioribns pinnatifidis, inferioribus (rarius omnibus) pinnatis, 

 pinnulis ovato- v. lineari-oblongis stipitatis superioribus crenatis inferioribus pinnatifido-lobatis obtusis 

 integerrimis crenatisve, rachi squamosa, stipite paleaceo.— Presl, Pterid. Aspidium, Br. Prodr. ScM. Fil. 

 t. 50. Midi. Prodr. Fl. Ins. Norf. A. Rich. Flor. A. Cunn. Prodr. A. Cunninghamianum, Col. in 

 Tasm. Phil. Journ. 



Hab. Common throughout the Islands. (Cultivated at Kew.) 



A common tropical Asiatic and Pacific Island plant; also found in Australia and Tasmania, and in South 

 America from Brazil to South Chili. It varies a good deal in stature and amount of division of the fronds, number, 

 distance, and length of the pinnas : the fronds are always extremely coriaceous and pale brown when dry.— Rhizome 

 stout, creeping, clothed with large membranous scales. Frond 6-34 inches high, very firm and thick in texture, 

 ovate, deltoid or oblong-lanceolate, pinnate or bipinnate. Pinnules stalked, ovate or linear-oblong, entire or lobed ■ 

 lobes rounded, quite entire or crenate. Sori large, brown or black. Rachis generally with spreading, scale-like 

 hairs. Stipes stout, covered with scattered large paleee, rarely naked. 



2. Polystichum aristatum, Presl; rhizomate brevi, fronde ovato-deltoidea v. lanceolata valde coriacea 

 glabra pinnata v. bipinnata, pinnis pinnatifidis, pinnulis basi lata adnatis stipitatisve ovato- v. lineari-oblongis 



pungentibus argute serratis pinnatifidisve, lobis pungentibus, rachi laxe paleacea, stipite basi squamato. 



Presl, Pterid. Aspidium aristatum, Swarlz. A. coriaceum, var. acutidentatum, A. Rich. Flor (Tab 

 LXXVIII.) 



VOL. II. 



