1859.] 



BRYOLOGY OF THE YORKSHIRE OOLITE. 



53 



a less decisive manner, owing to the Lower Oolite formation 

 being more calcareous than is the case further north. 



The total number of species which the district produces may- 

 be reckoned at upwards of 240, but to enter into a detailed ac- 

 count of the whole of these would be to extend this paper to a 

 much greater length than we intended. 



By way of illustrating the influence of climate upon the dis- 

 tribution, we will select out those species which find their head- 

 quarters in elevated situations. They amount to nearly 70 in 

 number, and occur principally about the culminating summits of 

 the Lower Oolite that lie on the south of the vale of Cleveland, 

 viz. Burton Head, Wainstones and Cranimoor. Some of the 

 more alpine species reach various points in the dales which ra- 

 diate from these, but none but the most widely disseminated 

 reach the dales that separate the calcareous plateaux of the 

 southern range of which I have spoken. None of them are 

 found in the great central valley, and their dispersion is analo- 

 gous to that of those flowering plants which Mr. H. C. Watson, 

 in the ' Cybele Britannica,' has placed under his Highland and 

 Scottish types of distribution : — 



Andi'esea Eothii. 

 Grymnostomum rupestre. 

 Grymnost. curvirostrmn. 

 Gymnost. inicrostomum. 

 Weissia cirrhata, 

 Brachyodus trichodes. 

 SeKgeria pusilla. 

 Seligeria recurvata. 

 Aiiodus donianus. 

 Blindia acuta. 

 Cynodontium Bruntoni. 

 Dicranum squarrosum. 

 Dicrannm fiiscesceus. 

 Disticliium capillaceum. 

 Didymodon flexifolius. 

 Trichostoraum flexicaule. 

 Trichostomum tortile. 

 Tortula tortuosa. 

 Encalypta streptocarpa. 

 Hedwigia ciliata. 

 Grimmia trichophylla. 

 Bacomit. heterostichum. 

 Bacomitrium aciculare. 



Ortliot. Drummondii. 

 Orthot. Hutchinsiae. 

 Zygodon Mougeotii. 

 Tetrapliis pellueida. 

 Tetrodont. brownianum. 

 Diphyscium foliosum. 

 Bogonatum alpinum. 

 Bolytriclium gracile. 

 Bryum crudum. 

 Bryum roseum. 

 Bryum Zierii. 

 Mniuin cuspidatum. 

 Milium orthorhynchmn. 

 Milium serratum. 

 Mnium stellare. 

 Mnium subglobosura. 

 Paludella squarrosa. 

 Entostbodon Templetoni. 

 Bartramia calcarea. 

 Bartramia balleriana. 

 Bartramia CEderi. 

 Bartramia ithyphylla. 



Splachnum ampullaceuni. 

 Tetraplodon mnioides. 

 Discelium nudum. 

 Fissidens osmundoides. 

 Scliistostega osmundacea, 

 Anictangiuin compactum. 

 Antitricliia curtipendula. 

 Cyliudrothec. Montagnei. 

 Hypnum crassinervium. 

 Hypnum pumilum. 

 Hypnum Crista- Castrensis. 

 Hypnum tenellum. 

 Hypnum beteropterum. 

 Hypnum flagellare. 

 Hypnum brevirostre. 

 Hypnum delicatulum. 

 Hypnum depressum. 

 Hypnum elegans. 

 Neckera crispa. 

 Neckera pumila. 

 Hookeria lucens. 

 Fontinalis squamosa. 



