54 13. DICKSONIA, §§§ PATANIA. 



is said to differ from this by its more flaccid fronds, and in the larger teeth of the seg- 

 ments ; and a plant (probably the same) was gathered in Tahiti by the American expe- 

 dition under Captain Wilkes. (See Brack«nridge, p. 275.) 



24. D. davallioirhs, R. Brown ; fr. tripinnate ; lower pinnoe 6-9 in. 1., 3-4 in. 

 br. ; pinrd: linear-acuminate, cut quite down to the rachis ; segm. oblong-rhom- 

 boidai, deeply inciso-pinnatifid ; rachis shining, not prickly, glabrous or nearly 

 so ; texture herbaceous, under surface slightly hairy ; sori 2 to 8 to a segment, 

 placed at the base of the sinuses ; imool. subglobose, cup-shaped, \ of aline across. 

 —HI. Sp. Ml J. p. 71. D. nitidula, Kume, Mett. Fil. Lips. t. 28. 



Hab. Australia, both temperate and tropical. — Habit of growth lax, and texture of the 

 frond thinner than in any of the other species. Fronds 2-4 ft. 1. ; lower segments under \ 

 m. \., 2-3 lines br., and finely cut. 



25. D. Smithii, Hk.; fr. tripinnate ; lower pinnae 9-12 in. 1., 3-4 in. br.; pinnl. 

 linear-acuminate, cut down to the rachis throughout, with rather distant, narrow, 

 acute segments; lower segm. ^ in 1., 2 lin. br. ; rachises slightly inciso-pinnatifid ; 

 and under surface densely tomentoso -glandular ; tescture subcoriaceous ; sori 

 2 to 8 to a segment ; invol. subg:lobos!e, cup-shaped, J line across. — Hk. Sp. Fil. 1. 

 p. 80. t. 28. D. 



Hab. Philippine Islands, Cwming. — liachises similar to those of H. fiacdda, but pin- 

 nules narrower and segments much smaller and less divided. 



26. D. scdbra. Wall. ; fr. 9-30 in. 1., 6-24 in. br., deltoid or lanceolate, bipin- 

 nate ; lower pinnm 4-8 in. 1., lanceolate ; pinnl, quite distinct, 1-1^^ in. 1., i in. 

 br., the lower ones cut down nearly to the rachis into numerous pinnatifid oblong 

 deltoid segments on both sides ; texture herbaceous or subcoriaceous ; rachis and 

 under surface more or less hairy ; sori 2 to 6 to the lower segments ; invol. cup- 

 shaped, subglobose, \ line across. — Hk. Sp. Fil. 1. p. 80. t. 27. B. D. deltoidea, 

 Hk. Sp. Fil. 1. p. 80. t. 27. A. Sitolobium strigosum, J. Sm. 



Hab. India, from the Himalayas to Ceylon, Malayan Peninsula. — Stipe sometimes 

 1 ft. 1., asperous, Tery hairy below ; rhizome wide-creeping. 



** Entire frond not more than 12-18 in. long. Sp. 27-29. 



27. D. Elwesii, Baker; fr. lanceolate, tripinnatifid, l-lj ft. 1.; rachis stra- 

 mineous, glabrous ; pinnm lanceolate, nearly sessile, 3-4 in. 1., J-^ in. br. ; the 

 rachis flattened ; pinnl. 20-30-jugate, lanceolate, sessile, cuneate at base, I5-2 lin. 

 br., deeply pinnatifid ; segm. ligulate, erecto-patent, many entire parallel, lowest 

 on upper side bifid ; texture membranous ; both sides green, glabrous ; veins soli- 

 tary in the centre of each segment; sori filling up the tip of the segments, 

 l-\ lin. br. 



Hab. Sikkim, near Lachen, 8,500 ft., H. J. Elwes. 



28. D. punctiloba; Hk. ; Jr. 12-18 in. 1., 6-9 in. br., lanceolate, bipinnate ; Imoer 

 pinnce lanceolate, 4-6 in. 1., cut quite down to the rachis except at the top ; 

 pinnl. ovate-rhomboidal, about J in. 1., J in. br., deeply pinnatifid ; texture thinly 

 herbaceous ; rachis and under surface more ^r less glanduloso-pilose ; sori 2 to 

 12 to a pinnule, placed at the base of the sinuses ; invol. subglobose, cup-shaped, 

 i line across.— .ffl:. Sp. Fil. l.p. 79. T>. pilosiuscula, Willd. 



Hab. Temperate N. America, fi-om Canada southward to Carolina and Tennessee. 



29. D. appendiculata, Wallich ; ;^. 12-18 in. 1., 6 in. br., lanceolate, bipinnate ; 

 lower pinnce linear-lanceolate, 3-4 in. 1,, cut down quite to the rachis unless at 



