Bartrum. — Rocks of Mount Gar gill, Dunedin. 179 



2. Pine Hill lava trachydolerite — 

 Class II. Dosalane. 



6. Mount Holmes basalt — 



Class III. Salfemane. 

 Order 6. Portugare. 

 Rang 4. (Not named.) 

 Subrang 3. (Not named-) 



7. Junction basalt 



Class. — Between II (Dosalane) and III (Salfemane). 

 Order 5. Germanare. (Gallare.) 

 Rang 3. Andase. (Camptonase.) 

 Subrang 3. Shoshonose. (Kentallenose.) 



Art. XVII. — Descriptions of New Native Species of Phanerogams. 



By D. Petrie, M.A., Ph.D. 

 [Read before the Auckland Institute, 28th November, 1911.] 



Colobanthus monticola sp. nov. 



Planta musciformis, humillima, dense caespitosa, ramosa, glaberrima. 



Folia arete imbricata, paribus oppositis basi in vaginam membranaceam 

 brevem connatis, 6-8 mm. longa, lineari-subulata, acicularia, viridia, mar- 

 ginibus stramineis valde incrassatis, cetera evenosa. 



Flores laterales breviter pedunculati, pedunculis fructiferis elongatis. 



Calyx alte 4-partitus ; lobis angustc lineari-subulatis, acicularibus, 

 foliis subsimilibus. 



Stamina 4, inter calycis lobos disposita, lobisque dimidio breviora. 



Stvli 4, breves, stamina vix sunerantes. 



Capsula 4-loculata, sepala aequans matura. 



