Class XXIV. 
CRYPTOGAMIA. 
877 
&J91. Vittaria. Sori solitary, continuous, linear, marginal or submarginal, immersed. Indusium double, 
superficial. 
2192. LoncJiitis. Sori lunate, marginal, placed under the recesses of the frond. Indusium from the margin 
of the frond, inflexed, opening inwards. 
2193. Antrophyum. Sori linear, continuous, immersed in the reticulated veins of the frond, Indusium 
double, opening in the middle 
2194. Adiantum. Sori inserted into the indusium, linear, contiguous, or roundish. Indusium marginal, open- 
ing inwards, either nearly continuous, or squamiform, or reniform. 
2195. Cheilanthes. Sori dot-like, separate, marginal in the recess of the indusium. Indusium either reflexed 
crenules of the frond, or squamiform, membranous, and arising from the margin, or nearly continuous, opening 
inwards. 
2196. Davallia. Sori roundish, nearly terminal and marginal, distinct. Indusium superficial, attached 
inwards, and opening outwards. 
2197. Dicksonia. Sori dot-like, marginal, solitary in the recesses of the frond. Indusia membranous, nearly 
globose, marginal, adnate, opening unequally with lacerated orifices, and spreading back in all directions. 
2198. Balantium. Sori oblong-linear, nearly terminal and marginal, transverse. Indusium coriaceous, reni- 
form, 2-valved, opening outwards : upper valve marginal, patera-shaped ; lower nearly flat. 
2199. Aspidium. Sori roundish, scattered. Indusium solitary, orbicular, peltate, or reniform. 
2200. Woodsia. Sori dot-like, scattered. Indusium membranous, placed under the sori, somewhat patera- 
shaped and ciliated. 
2201. Cyathea. Sori globose, scattered, inserted upon an elevated receptacle, which arises from a division of 
the vein. Indusium spherical, opening in the middle, and finally becoming patera-shaped. 
2202. Trichomanes. Sori marginal, inserted upon a long setaceous receptacle. Indusium erect, campanulate. 
2203. Hymenophyllum. Sori marginal, inserted upon a claviform receptacle. Indusium erect, 2-valved. 
Tribe II. OSMUND A CE^. 
TheccB without a ring, netted, pellucid, with radiating stria; upon their top, bursting lengthwise on one side. 
2204. Todea. Sori oblong, seated upon forked veins of an unchanged frond. TheciE globose, stalked, netted, 
opening from their base as high as a pellucid dorsal projection. Indusium none. 
2205. Osmunda. Sori nearly globose, alternately arising from the margin of a frond, which becomes changed 
into a panicle. Thec« globose, stalked, netted, opening from their base as high as a pellucid dorsal projection. 
Indusium none. 
2206. Lygodium. Thecfe oblong-ovate, striated at the end in a radiate manner, seated in two rows upon 
1-sided marginal spikelets, fixed by their backs and opening lengthwise in front. Indusium funnel-shaped, 
covering up each capsule. 
2207. Anemia. Thecae ovate, striated at the top in a radiated manner, disposed in compound unilateral 
spikes, attached by the base, and opening lengthwise. Indusium none. 
Tribe III. OPHIOGLOSSE^. 
TheccE \-celled, adnate at base, roundish, coriaceous, opaque, without a ring, not vascular, sometimes fastened 
together, half-bivalved. 
2208. Botrychium. Thecze naked, globose, distinct, attached to the rachis of a compound spike, half 2-valved, 
opening nearly at one side. 
2209. Ophioglossum. Thecs naked, connate in a distichous jointed spike, half 2-valved, opening at the 
side. 
2210. Marattia. Sori oval, somewhat marginal. Thecse united in a double row, opening inwards by a cleft. 
Indusium arched, opening lengthwise above, 2-valved, inclosing on each side a row of thecze. 
POLYPODIJCEJE. 
14442 Ster. fronds pinnat. Finn. ov. lane. ent. margin. Fert. fr. bipinn. Pinna? lin, Pinnul. obi. flatt. runn. together 
and Miscellaneous Particulars. 
by Mr. H. Shepherd, with so much success, that his method has been made the subject of a communication to 
the Horticultural Society, of which the following is an extract. " Having provided a common garden-pot 
four and a half inches in depth, and three and a half wide, let the bottom part, to the height of one inch, be 
fiUed with fragments of broken pots, by way of drain. Over these should be spread a stratum of such soil as 
commonly used for potting greenhouse plants, of the depth of two inches ; the remaining inch and half 
should be filled with brown loamy earth sifted through a hair-sieve, the surface being made perfectly smooth, 
and on this the seeds are to be scattered as evenly as possible. Care must be taken that the wind be not suf- 
fered to blow the seeds away, leaving nothing but empty capsules. The seeds being sown, no other covering is 
