IIYMKNOJ'IIVI.LUM. t>7 



Hab. Andes of Colombia, itbuve Quito, Prof. W. Jameson, n. I0<). — An 

 elegant, graceful and very distinct sj)eeies, which deservedly bears the name 

 of an able and most industrious uaiuralist. Caiidex creeping, very slen- 

 der, rooting, capillary as well as the stipes, which is about 2 inches long. 

 Frond often a span and more long, an inch wide in ihe broadest part, very 

 delicate, thin and nienilnanaceous; the raehis and eosta beneath singuliirly 

 beset with long, conspicuous, soft, spine-like processes. Whole frond of a 

 greenish colour when dry. 



34. H. Smil/iii, Hook.; erect, fronds oblong acuminate nar- 

 row at the base ])innate (dark brown), pinna; bi})innatifi(l lan- 

 ceolate acuminate, segments linear flaccid spinuloso-dentatc 

 rather obtuse, involucres sessile axillary oblong ovate almost 

 lanceolate rather acute entire 2-valved only half-way down, 

 rece])iacle exserted in age, raehis often cvinite winged above 

 very slightly so towards the base, stipes elongated terete gla- 

 brous. (Tab. XXXV. B.) — H. bivalve, Sm. Lu. Fil. Ins. 

 Philipp. in Hook. Lond. Jourii. Bot. ii. p. 418, [tiol Hwartz). 

 Hab. Philippine Islands, Cuming, n. 221 and 2(34. — This is not the //. 

 (Trichomams) bivalve o{ Forster in the Banksian herbarium ; tlic involucres 

 and other characters being widely different. From //. mullifidum it 

 equally differs in form and size, in the more delicate texture and acute in- 

 volucres. Its nearest ally is perliaps Il.fucoides, but the involucies are very 

 dissimilar. Stipes 3 — 4 inches long; fronds 4 — 6 inches or more. In Cum- 

 ing's ra. 264 the segments are rather broader and the involucres larger than 

 in n. 221 ; but there appeals no other maik of distinction. 



35. H. Bridijesii, Hook.; erect, fronds broadly ovate acu- 

 minate bi]>innate, pinnules subdeltoid pinnatitiJ, the segments 

 narrow-linear obtuse rather rigid somewhat crisped when dry 

 spreading dentato-serrate, involucres axillary or supraaxillary 

 sessile copious roundish-obovate entire or obscurely toothed 

 2-valved about two-thirds of the way down, the valves convex, 

 raehis and very elongated stipes hispid, the raehis only slight- 

 ly winged towards the apex. (Tab. XXXV. C.) 



Hab. Valdivia, on trunks of trees, Bridjes, n. 7!)5 and 796. Chiloe, Cii- 

 mini/, n. 9. — One of the most distinct of all the species, being truly bipin- 

 nate with very narrow patent segments and copious fructifications. Stipes 

 long (nearly a span), black, setose, especially above as well as the raehis. 

 Frond 3 — C) inches high, broad at the base, almost deltoid. It can scarcely 

 be the //. dcntatum of Cavanilles : or, if it be, the description is very 

 incorrect. 



Dubious Species of this Section. 



36. H. dentatum, Ciiv.; "caudex creeping, fronds tripin- 

 nate, pinnules alternate capillary, clusters of cajjsules strobi- 

 liform." " Cm: PneL'' 1801, n. 687. Sw. Si/n. Fil. p. 4()iJ. 

 IVi/ld. Sp. PI. V. p. 525. 



Hab. San Carlos, Chiloe, Cavanilles. — Can this be the same with //. 

 liridgcsii above described i' or may it not be a var. of H. Wilsoni ? IJy 

 the term slrol)iliform capsules is probably merely meant their dense arrange- 

 ment on the elongated rtccplaele conuuon to almost all tin species. 



u 



