Cause. — Flora of Mavgonui County. 277 



those of C. Cheesemanii standing out straight at an angle of 45°, by the 

 larger, oblong, and usually apiculate leaves, by the usually paniculate 

 inflorescence, and by the oblong drupe. 



Coprosma crassifolia Col. 



A few plants only found in woods at Tauroa. Hokianga is the northern 

 limit given in the Manual. 



Sonchus asper Hill v^r. littoralis Kirk. 



Occurs plentifully on damp sea-clifFs. This looks very distinct from 

 the common prickly sowthistle, and is, I think, worthy of specific rank. 



Thelymitra Matthewsii Cheeseman sp. nov. 



A dainty and apparently rare species, known only from a very restricted 

 area betw^een Lake Tangonge and the west coast. The small size and the 

 curious spiral twist of the leaf distinguish it from its congeners. It was 

 named in honour of the late Mr. R. H. Matthews, to whose painstaking 

 investigation we owe so much of our increased knowledge of the orchids of 

 the far north. 



Thelymitra imberbis Hook. f. 



Mr. H. B. Matthews, who is following in his late fathers footsteps as 

 an orchidologist, has recently discovered a variety of this orchid with ])ale 

 cream-coloured flower's. 



Caladenia minor Hook. f. 



Mr. Matthews has also dropped on a Caladenia with greenish-ye'Iow 

 flowers, pink being the usual colour. 



Corysanthes Carsei Cheeseman sp. nov. 



This is a very tiny plant, |-| in. high, rather difficult to find. It 

 occurs in wet peat associated with Lycofodium Drummondii, Drosera sfathii- 

 lata, Utricidaria delicatula, &c. It was discovered by Mr. H. B. Matthews 

 and m}'Self in a morass adjoining Lake Tangonge. 



Scirpus sulcatus Thouars var. distigmatosus C. B. Clarke. 



Occurs in maritime marshes. So far I have not seen it inland in tliis 

 district.* 



Uncinia pedicellata Klikenthal. 



This appears on my list as " Uncinia sp. pps. intermediate between 

 U. australis and U. riparia:' Specimens which I obtained at Kaitaia were 

 identified as above by Oberpfarrer Klikenthal, the great European authority 

 on the Cyperareae. 



Carex vacillans Sol. 



So far in the far north I have seen only a very few poor specimens of this 

 usually common plant. 



* Since the above was written this sedge was found by Mr. H. B. Matthews 

 swampy land adjoining Lake Tangonge. 



