716 JUNGERMANNIACEVE. (SCALE-MOSSEJ.) 



tuse lobes and sinus, or retuse or often entire ; underleaves light pink, deeply 

 bifid, the setaceous lobes spreading-incurved ; monoecious ; involucral leaves 

 somewhat oblong, repaudly 2-4-tootlied at the apex; perianth subobovate, 

 slightly angled. On logs, Little Falls, N. Y. (Austin) ; Ont. (Macoun). 



4. L. minor, Nees. Diffusely branching ; leaves pale green, oval-sub- 

 quadrate, expanded, convex, slightly rigid, equally and acutely bifid with a 

 lunate sinus ; uuderleaves -J as large, deeply bifid, the lanceolate lobes acumi- 

 nate; dioecious; iuvolucral leaves like the cauline ; perianth obtusely trian- 

 gular-plicate at the apex. (L. crocata, Anst.; not Nees.) On the ground 

 Vad dry rocks in limestone regions (Austin). (Eu.) 



* * Divisions of the underleaves more or less dentate. 



5. L. heterophylla, Nees. (PI. 23.) Stems short, creeping or ascend- 

 ing, much branched ; leaves ovate-subquadrate, entire, retuse and bidentate on 

 the same stem ; underleaves large, 2 - 3-cleft ; iuvolucral leaves lobed and den- 

 tate; perianth terminal, the mouth crested. On the ground and rotten logs 

 in woods and swamps; very common. (Eu.) 



6. L. Hallii, Aust. Creeping, very slightly rooting; leaves subvertical, 

 oblong, cleft nearly to the middle with obtuse sinus and erect mostly obtuse 

 lobes ; lower uuderleaves small, subequally 2-parted with an obtuse sinus, the 

 upper ones larger, with a single tooth on each side or palmately 3-4-parted, 

 the apical sublauceolate and narrowly bifid. On the ground, 111. (Hull). 



19. CHILOSCYPHUS, Corda. (PL 23.) 



Leaves succubous, dorsally decurrent, mostly rounded and entire; under- 

 leaves rooting at the base, usually deeply 2-cleft. Fruit terminal on a very 

 short lateral branch. Iuvolucral leaves 2-6, the outer smaller, the inner va- 

 riously cut ; perianth small, obconic or campanulate, 3-augled and 3-lobed only 

 at the apex, the lobes usually spinose. Calyptra fleshy, subglobose or clavate 

 Capsule oblong-globose. Antheridia in the saccate bases of stem-leaves. 

 (Name from x^os, a lip, and <TKV<J>OS, a bowl, from the form of the perianth.) 



* Underleaves ^-parted. 



1. C. ascendens, Hook. & Wils. (PI. 23.) Prostrate; leaves large, 

 pale green, ascending, roundish-oblong, slightly emarginate ; involucral leaves 

 two, 2-cleft; perianth 2 -3-lobed, the lobes long and irregularly lacerate- 

 toothed. On rotten logs ; rather common. 



* * Underleaves bijid. 



2. C. pallescens, Dumort. Procumbent, creeping; leaves flattened, 

 ovate-subquadrate, obtuse or retuse ; underleaves ovate, distant, free ; involucral 

 leaves two, 2-toothed ; perianth deeply trifid, the lobes spinose-dentate, mostly 

 shorter than the conspicuous calyptra. Mountains of N. Eng. (Oakes). 



3. C. polyanthos, Corda. Procumbent, creeping; leaves subascending, 

 ovate-subquadrate, truncate or subretuse ; underleaves ovate-oblong, distant, 

 free ; involucral leaves 2, slightly 2-toothed ; perianth 3-lobed, the short lobes 

 nearly entire, shorter than the calyptra. Var. RIVULARIS, Nees. Larger, 

 more brandling, succulent ; leaves mostly rounded above ; underleaves often 

 divided in halves or wanting. On the ground among mosses or on rotten 

 logs, common ; the variety in shaded rills or still poods. (Eu.) 



