*-p- 



2 ' ICONES PLANTAEUM. 



A very distinct species, remarkable for its very large panicles and 

 sweet-scented wliite flowers. Its position among the New Zealand 

 mecies is near S. perdicioides and sciadopMhts. — J. D. Hooker. 



Fig. 1. Capltulum and bracteoles. 2. Eracts of involucre. 3. Flowers of disk. 

 4. Ditto of ray. 5. Style arm of disk flower. All enlarged. 



When describing CorysantJies Cheesemani (Tab. 1120) Heft in doubt 

 certain points of structure, in respect of which I differed from the 

 discoverer of the plant and from the artist whose figure is quoted 

 above. These I am now enabled to clear up by means of specimens 

 in spirits, kindly communicated by Mr. Cheeseman. 



In none of these do I find the ligulate process figured, nor anything 

 in its place. The base of the lip is produced downwards on each side 

 of the mesial line into a conical hollow obtuse short spur, between 

 which spurs the two lateral sepals, reduced to subulate ascending pro- 

 cesses, are projected as represented in figs. 1 and 2. I find no trace 

 of petals. The lamina of the lip varies much in shape ; it appears 

 usually as represented at fig. 1, but sometimes as in fig. 2, and in a few 

 cases it is reduced at the apex, having no reflected portion. 



As a species, 0. Cheesemani is very clearly allied to the Australian 

 G.fimbriata^ Br., differing chiefly in the spurs of the lip and absence of 



petals. ► 



A specimen of G, (Kemetoceras) macrantJia^ Hk. f. (Fl. N. Zeald. 1. 

 249, t. LVII. ; Handbook, p. 266), sent by Mr. Cheeseman with the 

 above, shows that the petals are inserted at the base of the lip at its outer 

 margin, one on each side, apparently on a level with the lateral sepals, 

 which are placed between the petals, that is to say, nearer to the 

 mesial line of the lip. The lip is twisted from the base, so that access 

 to the pollen and stigma is gained from the base of the flower, not as 

 in CorysantJies Cheesemani^ by the mouth of the lip. If this arrange- 

 ment is constant, and prevails through the other plants upon which I 

 established the genus Nemetoceras, in the New Zealand Flora, it 

 may indicate the propriety of retaining that genus instead of merging 

 it in Corysanthesj as I have done in the ' Handbook of The New Zea- 

 land Flora.' The whole genus demands an attentive study from the 

 local observer, in respect both of structure and mode of impregnation. 



— J. D. HOOKEE. 



I 



