8 ATRICHUM. 
A. Flores monoici. 
1. ATRICHUM UNDULATUM P. Beauv. foliis superioribus confertis, longis, ligulato-lanceolatis, e 
medio ad apicem utraque ala undulatis, margine anguste limbato, dentato , dentibus saepe binatıs ; 
capsula cylindrica, arcuato-cernua, operculo longissime rostellato, rostello curvulo. 
Atrichum undulatum Par. Bravv. Prodr. de l'Elhéogamie. 
Polytrichum undulatum Hzpw. Stirp. I, p. 43, Tab. 16 et 17; ejusd. Spec. Muse. p. 98. — Schuwär. 
Suppl. I, P. Il, p. 300. — Hoox. et Tavr. Muse. Brit. ed. 2, p. 43, T. 10. x 
Catharinea callibryon Eurn. Beitr. I, p. 189. 
Catharinea undulata Rónumc Deutschl. Flor. III, p. 61. — Brw, Bryol. univ. II, p. 102. 
Bryum phyllilidis folio rugoso, acuto, capsulis incurvis Diren Hist. Musc. p. 360, Tab. 46, hg. 18. 
Bryum undulalum Liss. Sp. Pl. p. 1530. 
var. 6. attenuatum, foliis angustioribus, lenerivribus, siccitate magis crispalis , costa Ea d la- 
mellatu, capsula graciliort. 
Polytrichum undulalum var. 1. Hoox. et Wirsos in Drummonn Musci Americani, fasc. IL, Nr. 66. 
e 
var. y. abbrevialum, pedicello, capsula et peristomi dentibus brevioribus. 
Hab. Per totam Europam locis graminosis, umbrosis. Var. 8. in America IE var. 
y. in terra nuda arenosa. 
Matur. Sero auctumno et hyeme. 
Tab. I, II. Rhizoma vagans, ramosissimum. Caules floriferi, erecti vel flexuoso erecti, semi- 
unciales et biunciales, primo anno plerumque flore masculo terminati, secundo e floris axi prolificantes 
et florem femineum sistentes (fig. 1, 2, 3). à 
Folia inferiora minutula oblique inserta et cauli oblique incumbentia (fig. 5, 9), lanceolata, ru- 
bella, costa haud lamellosa, apice obsolete serrulata (Tab. II, fig. 1, 2), ascendendo caule sensim 
majora (3) et e lanceolata forma in elongato-lanceolatam (4) et anguste ligulatam transeuntia (5, 
6), valde undulata, limbo angusto rufescente cellularum angustarum series duas sistente et dentes 
validos subeorneos saepe geminatos exhibente (IL, 7) cireumducta, eoncavo-carinata (6 x, x^ x“) api- 
cem versus dorso dentieulis numerosis in series transversas dispositis (IL, 4, 6 x^, x“, 6 a^) instructa, 
humiditate e basi erecta patentia, flexuosa, siccitate torta et crispata; costae lamellae 2—6, ond 
Al, 9, 10, 11), subundulatae. 
Flos masculus in caule annuo terminalis: Perigonium gemmaceo-discoideum (cyathiforme) , 15— 
l6phyllum ; folia perigonialia quinque externa comalibus similia, paulo breviora et latiora (1, 6) interna 
in rosulam disposita (II, 12 4), parvula, e basi lata concava brevi lanceolata (13), intima obcordato- 
acuminulata (14, 15), apice crenulata, costa tenui haud lamellata, tenera et laxius areolata. Anthe- 
ridia parvula, paraphysibus pallidis paulo longioribus instructa (19). 
Flos femineus triphyllus (Tab. I, 6): Perichaetialia primo lanceolata, fructu maturo anguste 
ligulata, comalibus longiora, — tria, gracilia, paraphyses brevissimae (17, 12 9). 
Fruclus solitarins vel gemellus, hic illie ternatus: Vaginula oblonga, apice membranacea. Ca- 
lyptra perangusta, fusca (18). Pedicellus caulem longitudine aequans, erectus, tenax, intense rubel- 
lus, siccitate sub capsula dextrorsum tortus (32). Capsula cylindrica, cernua, arcuata, rarius recta, 
plus minus elongata (17, 19, 20), collo perbrevi instructa, pachyderma, brunnea. Opereulum e basi 
hemisphaerica, inflata; intense purpurea longe rostellatum, rostello tenui, capsulam fere longitudine 
aequante, subrectum vel curvatum.  Peristomii dentes longiusculi (27, 2S, 29) in axi aurantiaci, la- 
teribus hyalini; membrana basilaris firma, intense aurantiaco-rufa. Columella teres, maximam spo- 
rangii partem occupans (23 b). Sporae generis (30). 2 
