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Rh DICRANUM DEBILE, Hook. et Wils. Tab. 20. humiles, graciliores, gregariæ vel cæspitulosæ, flaves-centi-virides.

subsemiuncialis, simplex vel sæpius e basi pluries divisus, erectus vel ascendenti-erectus.

minima, dissita, lineari-oblonga, ascendendo majora longiora confertiora, suprema longissima, subsecunda, carinato-concava, marginibus recurvis subundulatis; reti laxiore oblongo; costa valida semitereti cum vel sub apice obtusiuscula desinente.

dioici: masculi subcapituliformes, in plantis femineis minoribus terminales.

ovalis, erecta, operculo subulirostro ipsam aequante instructa, annulata; pedicello mediocri; peristomii dentibus inferne purpureis striolatis, in crura duo longa scabra fissis.

Banks of ditches and roadsides, Louisiana and Alabama.

TAB. 20.—