Osunmdaceæ.
TAB. XIX.
S C H IZÆ A . Sin. Sw.
Sporangia ovalia, sessilia, vasculoso-reticulata, apice annula ta vel radiatim striata,
hinc longitudinaliter dehiscentia, unilateralia bi-seu quadriselia, in appendicibus
, linearibus flabeilatis vel pinnatis plerumque pilosis disposita. Indusium e marginibus
inflexis formatum, intus liberum.—'Frondes coespitosoe, lineares rarius
flabelliforme latæ, simplices vel dichotomoe, plerumque compressoe, costatoe, vel, in
speciebus frondibus latioribus, venosæ, venis niimerosis parallelis elongatis, basi
solummodo dichotomis.
Schizæa dickotoma. Sw. Syn. Fil. p . 150. B r . Prodr. Fl. Nov. Holl. p . 162. Hook,
et Grev. Ic . Fil. t. 17.—Acrostichum dichotomum. L in n . Sp. PI. p . 1525.—R ip i-
dium dichotomum. Bernh.
A singular and very beautiful and very distinct genus, of which the species have a very
extensive range in both hemispheres. The most northern limit of any species is New
Jersey in N. America. In the south, they extend to the Cape of Good Hope and Van
Diemen’s Land.
Fig. 1. Extremity of a fertile frond ; magn. 5 diam.—/ 2. Inner view o f a portion of the append,
ages J m. 10 diam.—/ 3. Outer view of a smaller portion of the same.—/ 4. Single appendage, inner
view; m. 20 diam.—/ . 5. Transverse section of the same; do.—f . 6. 6. Sporangia in a ripe state ;
m. 100 diam.—/ 7. Sporangia bursting; m. 100 diam.—/ 8. 8. Sporules ; m. 400 diam.
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