84 Anthelia — Aracliniopsis 



to reserve for y. squarrosa, and possibly J. sctiformis (? and y. hirtella), because he 

 finds the sterile pistillidia in jf. squarrosa limited to the base of the calyptra, and not 

 scattered over its whole surface as in y.jiilacea (which he would regard the type of 

 Anthelia). As I have not seen fertile specimens of any ot Lindberg's Chandonanthi, 

 I am unable to form an opinion as to the validity of this difference as a generic dis- 

 tinction. Like many other characters, it is sometimes constant through large groups 

 of species, or entire genera ; while in other groups, two species so closely allied in 

 every other particular as to be generically inseparable, may have, the one a perfectly 

 free calyptra, the other a calyptra more or less veiled by the adherent thalamus, or 

 receptacle. (That the calyptra itself is always truly gynogenons, is so plain to observ- 

 ation as to need no proof.) In Mars2Lpella (or Sarcoscyplnis) — including its subgenus 

 Acolea (or Gymnomitrimn N.) — we find some species with free, others with adherent 

 receptacles. In Nardla ( Alicularia ) scalaris, N. }i(ematosticta, N. (Eucalyx ) srie- 

 culenta (L. et L. sub Jung.), &c. the sterile pistillidia stand around the base of the 

 calyptra, and to a variable (but never to a great) height on its surface ; but in the 

 curious Alicularia Breidleri Limpr. the few sterile pistillidia are found near the apex 

 of the calyptra; wherefore, if that alone were a valid generic distinction, this species 

 ought to be separated from Alicularia. 



Lindberg finds the female bracts oi Anthelia julacea adnate to the lower part of 

 the perianth, as in Nardia; but I can detect no adhesion above the base of the 

 perianth : certainly none greater than is often observable in such jfuiigernianice as 

 J. spluerocarpa, jf. lurida, and others. 



AKACHNIOPSIS nov. gen. 



PlantcE pusillse confervoidese griseo-vel coeruleo-virescen- 

 tes, ad telaranese instar late iiitextse. C aides filiformes laxe 

 corticati, postice ramosi et radicellosi. Folia capillacea 

 stricta, cellulis cylindricis, 2 — 6 plo longioribus quam latis, 

 uniseriatis constantia et vel unicrura vel in aliis speciebus 

 bicrura; cruribus ab ipsissima basi discretis, altero (antico) 

 paulo inferius inserto. Foliola vel subnuUa. F lores $ 

 cladogeui; hractece 3-stichfe, 3 — 5-jug£e, intimse liberie vel 

 subconnatse, pro more quadripartit?e, laciniis capillaceis e 

 limbo basali angusto ortis. Pistillidia sub 12. Perianthia 

 prselonga, linearia, superne (saltern) trigona, ore longe 12- 

 laciniato-ciliata. Calyptra tenuis libera. Capsula oblonga, 

 cseteraque iis Cephalozice conformia. A ndrcecia ieTimnsdm; 

 bractecE foliis conformes incurvse monandrse. — Hab. et Dis- 



