74. IIELMINTHOSTACIIYS. 75. BOTRYCIIIUM. 447 



§§§§ Rhizoglossum, Presl. Fertile and barren fronds distinct. 

 Sp. 10. 



10. 0. (Rhiz.) ^e/-^?«m<»i, Schlecht ; rhizome slightly tuberous, one bearing 

 several fronds of both kinds, the barren ones ^-1 lin. 1., \ in. br., linear, fleshy, 

 the fertile spike slender, \ in. 1., on a slender peduncle \-\\ in. 1. — Ilk. Ic, t. 2(53. 



Hab. Cape Colony, rare. — A very delicate «nd distinct little plant. 



Gen. 74. Helminthostachys, KauJf. 



Caps, in small crested clusters which form a long loose spike. Tab. IX. 

 fig. 74. 



1. H. zcj/Ianica, Ilk, ; rhizome thick, fleshy, creeping ; st. often 1 ft. 1. ; barren 

 segm. pahnato-pinnate, often in three principal divisions, which are stalked and 

 again forked or pinnate, the ult. divisions linear-oblong, 3-4 in. 1., |-1 in. br., 

 the apex acuminate ; the edge slightly toothed ; texture subcoriaceous ; fertile 

 spike solitary, arising from the base of the barren segm., 3-4 in. 1., \ in. br., the 

 firm peduncle about as long as itself. — Hk. 2nd Cent. t. 94. G. F. t. 28. 

 Beddome, t. 69. Osmunda, L. H. dulcis, Klf. 



Hab. Himalayas, Cochin and Philippines to Ceylon, New Caledonia, and Queensland. 

 — Presl makes three species, and published the plant from Mexico by mistake under tlie 

 name of Boti-yopteris mexicana. 



Gen. 7''>. BoTRYciiiuM, Sw. 



Caps, s&ssile, arranged in two rows on the face of spikes which form a 

 comi>ound panicle. Tab. IX. fig. 75. 



* Texture thick. Sp. 1-4. 



1. B. simplex. Hitch. ; st. slender, 1-4 in. 1. ; sterile segm. short-stalked, 

 ^-li in. 1., j-^ in. br., ovate or oblong-lanceolate, cut down to a flattened rachis 

 into' 1-3 oblong or obovate pinnge on each side, which are toothed or pinnatifid, 

 with usually their own breadth between them ; panicle elongated, i-1^ in. 1., 

 with a few distant branches, the lowest sometimes branched again, the peduncle 

 about as long as itself.— ^/t. c^^ Gr. t. 82. B. Kannenbergii, Klins. 



Hab, United States and British North America ; North Europe. 



2. B. rutaceum, Sw. ; st. stout, 1-4 in, 1, ; sterile segm. sessile, 1-2 in, L, ovate- 

 de'ltoid, broadest at the base, cut down to a flattened rachis into several close 

 obovate-rhomboidal jom?zoe on each side, the lower ones deeply pinnatifid ; fertile 

 peduncle equalling the sterile segm, when mature ; panicle close, 1-2 in. 1., lan- 

 ceolate-deltoid, bipinnate.— iV"ei<;w. Phi/t. 5. p. 133, B, matricarisefolium, A. Br. 

 Koch. — j8, B. lanceolatum, Angst, ; st. more slender ; pinnce linear-lanceolate, 

 with a space between them, the lower ones sharply toothed, panicle smaller. — 

 B. palmatum, Presl. 



Hab. Scandinavia to TJnalaschka ; /3 also in the United States. — Figures of the two 

 varieties and all the other European forms will be found in a paper by Milde in vol. 26. 

 pt. 2. of the Nova Acta N. C. Swartz seems to have confused this with the small forms 

 of species 4. B. crassinervium and boreale, Milde, come very near to the typical form. 



3. B. Ltmaria, Sw. ; st. stout, 1-4 in. 1. ; sterile segm. sessile or nearly so, 

 1-3 in. 1., i-1 in- br., not much broader at the base than the middle, cut down to 

 a flattened" rachis into several distinct, close, entire, or notched cuneato-flabellate 

 pinnae on both sides ; fertile peduncle equalling or exceeding the sterile segra. 



