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TAB. XXXIII.
A S P ID IU M . Schott. Presl.
A s p i d i i s p e c . Auct. N e p h e o d i i s p . Bory. H y p o p e l t i s . B,ich.
Sori dorso venularum au t angulis macularum inserti, globosi, magni. Indusium
orbiculatum, p e lta tum .—Rhizoma subglobosum. Frondes fasciculatoe, stipitatæ,
herbaceoe, lobatim pinnatimque divisæ. Venæ pinnatæ, distantes, costæformes, p lu s
minus flexuosæ, ramosissimoe. Venulæ primariæ in maculas (primarias) hexagonoideas
inoequales et acutangulas aut parallelogrammas lateribus curvatis, secundarioe
in maculas minores hexagonoideas vel inoequcditer angulatas interno ramuliferas
anastomosantes. Ram uli liberi simplices ramosique, recti a u t incurvi, apice acu-
tiusculo desinentes. Sori multiseriales— Species tropicæ Americanæ et Asiaticæ.
Presl.
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Aspidium irifoliatum. Sw. ( T a b . X X X I I I .)
Various have been the opinions of botanists as to the limits of the Genus Aspidium.
Of the propriety of separating those species with peltate indusia from those with the reni-
form ones, fixed by the sinus, there can now be scarcely a question ; and hence the two
Genera adopted by Brown, of Aspidium and Nephrodium. These, again, are by Presl
subdivided according to the nature of the venation. In this present instance, Presl’s ideas
are adopted, and his Aspidium divides itself into two groups.
§ 1. A sp id ium (verum). Maculæ primariæ hexagonoideæ ;—embracing A . Plumieri,
Presl ; A . trifoliatum and macrophyllum of Sw. ; and A. heracleifolium, Willd.
§ 2 . B a t h m iu m . Maculæ primariæ parallelogrammæ, latere interiore et posteriore cur-
vato ;—including Asp. alatum and Singaporianum, Wall. ; A . decurrens, Menyanthes, and
Hoenlm, Presl ; and A. repandum and polymorphum, Willd.
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F ig. 1. Under surface of a small portion of a frond ; magn. 5 d i am .- / : 2. 3. Sori in a young state,
and f . i. S. in a more advanced state ; m. 20 diam.—/ 6. The same sorus as at / S, seen from beneath
; do.—f . 7. A vertical section through the sorus ; do.—f . 8. 9. Sporangia in different states ; m.
100 diam.—/ 10. Sporules ; m. 200 diam.
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