COLENSO's NEW-ZEALAND HEPATIC^. 267 



repleti, pallide flavescentes. SporsB 0*025 mm,, dense verrucosa), 

 flavescentes. Antherse in alveolis ma^nis eerainatae. 



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Species of Anthoceros are rather common all over Europe, and 

 easily found in all stages of development ; it is therefore scarcely 

 necessary to state that young involucra are closed at the top, and 

 later on ruptured by the protruding capsule, leaving an irregular 

 lacerate opening, parts of which are torn away or remain ad- 

 hering as scarious rudiments. The old authors have taken great 

 care to describe these broken tissues as teeth or lips &c, and tried 



to find specific differences in what is naturally of quite accidental 

 origin. 



If a well-developed capsule of Anthoceros be taken out of the 

 frond with the basal bulb adhering, and split open from top to 

 bottom, spores and elaters in all stages of development will be 

 found, ripe at the top, the youngest and least developed at the 

 base ; the walls of the capsule keep pace with the development of 

 its contents, and the valves are firmly united at the base and still 

 green. This lower part of the capsule has been often described 

 as a pedicel, which certainly is not correct. This presumptive 

 pedicel is called sometimes " long exserted " or " included/' which 

 of course means nothing more than the more or less advanced 

 ripeness of the capsule, and can be of no diagnostic value. 



9. Hakpalejeunea Coleksoi, Steph., sp. n. (PL XXV. figs. 

 6-9.) 



Dioica, pusilla, in cortice dense depresso-caespitosa, pallide 

 virens. Caulis 1 cm. longus, vage pauci-ramosus, rami simplices 

 vel pinnulis remotis instructs Folia dissita, e basi turgida ovato- 

 triangularia acuta vel cuspidata, acumine decurvo-uncinato, antice 

 caulem angulatim superantia ; lobulus folio duplo brevior, cur- 

 vato-semiovatus, inflatus, carina papulosa, abrupte in folii mar- 

 ginem exeunte, apice truncatus, angulo acuto. Amphigastria 

 foliis parum minora, remota, transverse inserta usque ad medium 

 biloba, sinu recto obtuso, lobis ovato-oblongis muticis. Flores 

 feminei in caule terminales utroque latere inuovati ; folia floralia 

 caulinis multo majora, erecta, ovata, apice acuta, incurvata, 

 lobulus parum brevior, semiovatus, margine postico replicato ; 

 amphigastrium florale obovatumadiincisum, sinu acuto lobisque 

 rotundatis. Andrcecia ignota. Folii cell. 0017 X 0*012 mm. 



Not larger than Lejeunea minutissima , and somewhat resemblii 

 Harpalejeunea subfenestrata, Massal., of Cape Horn. 



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