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lulae angulares permultae, magnae, quadratae, laxae, hyalinae,<br />

ceterae majusculae, rhomboidi-prosenchymaticae, uon serpen-<br />

tinae, parum incrassatae, hyalinae. Folia ramea ovato-oblonga,<br />

acuta, apice vulgo leniter torta, remote serrulata, nervö lon-<br />

giore, cellulis angularibus minus distinctis. Inflorescentiae<br />

ambae in caule primario, parcae. Bracteae perichaetii nu-<br />

merosae, densissimae, late acutae, abrupte squarrosae, inte-<br />

gerrimae; paraphyses non prominentes. — Androecia parva;<br />

bracteae acuminatae, integerrimae, enerves, laxius textae; an-<br />

theridia pauca, ovato-oblonga, paraphysibus paullo longiora.<br />

Proxima Hypnum rivulare est planta<br />

multoties robu-<br />

stior, ramificatione plane alia, ob ramos erectos, arcuatos, e<br />

medio dense subarbusculoso-ramulosos, vix acutos;<br />

linis<br />

foliis cau-<br />

longis, minus decurrentibus, anguste rhomboidi-ovatis,<br />

breviter acuminatis, concavioribus et apice cucullatis, plica-<br />

tis, jam e basi, angustiore vixque auriculata, serrulatis, nervö<br />

crasso multoque longiore, cellulis fere triplo longioribus et<br />

subpleurenchymaticis, serpentinis.<br />

3. Hypnum (Brachythecium) rutabulum (Lobel.) L.<br />

Autoica, caulis vix arcuatus, ramis erectis rectisque,<br />

plus minusve obtusiusculis; folia densa, viridia, non scariosa;<br />

cellulae angustae, pleurenchymaticae, chlorophylliferae, angu-<br />

lares paucae parumque distinctae; folia caulina late ovata,<br />

subabrupte breviterque acuminata, cochleari-concava, densiu-<br />

scule serrulata, nervö vulgo longe supra medium dissoluto;<br />

folia ramea läxa, undique patenti-erecta, subsensim acuta,<br />

acumine vix torto, margine piano, dense acuteque serrulato,<br />

nervö sat tenui, supra medium dissoluto, dorso laevi et vix<br />

umquam ut spinula excurrente; bracteae perichaetii subinte-<br />

grae ; paraphyses vaginulae copiosissimae, super perichaetium<br />

alte prominentes; seta breviuscula, sat robusta; theca male

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