Jungermannia.] HEPATIC^. 55 



Female Receptacle none. Capsule in a sessile terminal bi- 

 valved loculus. Calyx none. 



1 . T. hypophylla, Linn. sp. pi. p. 1603. Web. et Mohr. Cr. 

 Germ. p. 391, t. 12. Eng.Bot. t. 287. Raddi in Opusc. Scient.di 

 Bologna II. 359. Sprcng. Syst. IV. p. 235. Muse. Brit. ed. 2, p. 

 218. Lindenb. Syn. Hep. Europ. p. 110. Micheli, Nov. Gen. 3, 

 t. 3. Dill. Hist. Muse. t. 78, /. 9. 



On the Cave Hill, near Belfast, Mr. Templeton. Fronds in im- 

 bricated patches, 1 to 1 inch long, one-tenth broad, lineari-obovate, 

 concave, their margins purplish black, minutely undulate, nearly entire, 

 their substance thicker towards the middle, thin at the edges ; of a dull 

 green ; the pores are minute flattish-conical white elevations of the cu- 

 ticle with an irregular but roundish aperture at the top, which is not 

 marginate. Beneath, along the midrib are numerous whitish, simple, 

 filiform rootlets, and as in the other Marchantiece, not jointed 

 but marked with numerous closely set most minute dark dots. On 

 each side of the midrib are purplish, reticulated lunulate scales which 

 are sometimes acuminated, imbricated towards the top and one or two 

 even on the loculus. Mai", Receptacles, which perhaps have been 

 hitherto unobserved, are situated at the extremities of very narrow 

 rather short fronds, whose edges are involute, and are altogether similar 

 to the loculus of the capsules but smaller, at the base of this the re- 

 ceptacle is sessile, surrounded by numerous short white filaments and 

 consisting of a carnose disc of a pale colour in which the anthers are 

 imbedded. The anthers are oblong spheroids, a little narrower at one 

 end, closely packed together, consisting of a smooth tegument and 

 containing a pale brown fluid. The loculus of the capsule is globular, 

 dark purple, shining, opening by two marginate valves vertically, opaque, 

 closely reticulated, its pedicell short, succulent, pellucid, bursting irre- 

 gularly at the top and discharging within the loculus seeds, which are 

 subrotund muricated, rather large and brown, as well as filaments about 

 four diameters of the seeds in length, dark brown, swollen in the mid- 

 dle arid marked with a single spiral thread, which, however, is crossed 

 spirally by numerous much finer and more close dark lines. The 

 calyptra becomes ruptured horizontally, the portion remaining fixed to 

 the loculus is thin, reticulated and purplish ; the upper portion to 

 which the style is fixed fugacious. 



6. JUNGERMANNIA, Linn. 



Common Female Receptacle none. Capsule 4-valved, exsertedon 

 a succulent, somewhat pellucid pedicell, and containing seeds 

 and spirally marked filaments. 



1. Frondose. 



1. J. cali/cina. Frond lineari-oblong, the margins elevated, 

 sinuose, undulated, fruit on the upper surface of the frond over 

 the midrib, the calyx tumid, broadly ovate, subplicate, fringed 

 at the mouth ; calyptra included in the calyx. 



On shaded wet banks and in fields lately cropped, very common. 

 Flowering at Dunkerron, County of Kerry, in February and March. 

 This species is so like Jung, epiphylla that it appears hitherto to 

 have been confounded with it ; the only advance towards their separa- 



