FISSIDENS EXIGUUS, Sulliv.
Tab. 23.
Plantæ perpusillæ, annuæ, laxius densiusve gregariæ, flavovirides.
Caulis sublinearis, erectus vel declinatus, basi sola radicans.
Folia 4–6-juga, in caulibus erectis explanata, in declinatis ad unura latus vergentia, oblongo-lanceolata, acuta, superiora inferioribus multo majora, immarginata, integerrima; lamina apicali duplicaturam æquante, dorsali ad basin folii evanida; costa subflexuosa fere ad apicem attingente.
Flores dioici: masculi diphylli in plantis femineis similibus terminales; antheridiis 3–4; paraphysibus nullis.
Capsula terminalis, erecta, oblongo-ovalis, in pedicellum mediocrem defluens; peristornii dentibus ad medium fissis; operculo rostellato; calyptra dimidiata.
Fissidens exiguus, Sulliv. in Mem. Amer. Acad. n. ser. 3, p. 60, t. 2; Musc. Alleghan. No. 182; Mosses U. States, p. 24.
Hab. Stones in moist and shaded ravines, dry channels of woodland brooks, &c.—Common.
Resembles the European F. exilis, but that has subserrulate leaves and a monoicous inflorescence.
TAB. 23.—Fissidens exiguus.
1. Plantæ naturali magnitudine.
2, 3. Plantæ fertiles.
4. Planta mascula.
5. Frons infertilis.
6. 7, 8. Folia caulina.
9. Apex folii areolationem exhibens.
10, 11. Capsulae.
12. Pars peristomii.
13. Sectio verticalis ejusdem.
14. Calyptra.
15. Antheridium et foliuni perigoniale.
