Dr Gmhani''s List of Rare Plants. 105 



This very handsome pUint was raised from seeds obtained by Messrs 

 James Dickson and Sons, Edinburgh, from Swan River, and flowered 

 for the first time in their nursery garden in May 1838. 



Collinsia heterophylla. 



C. hcterophylla ; foliis inferioribus trilobatis, superioribus ovTito acumi- 

 uatis ; pedunculo floribus breviore ; calycibus glanduloso-pubescen- 

 tibus ; kiciniis corolla? apice rotundatis, creuatis, lobo medio labio- 

 runi inferiorum subacuto, labio superiore fauce subintegro. 

 Colluisia heterophylla, Buist, MS. — Grah. in Bot. Mag. 3695. 

 Description. — J?oof annual. Stem erect; branches divaricated, ascend- 

 ing, slightly pubescent when young. Leaves glabrous, distantly serrated, 

 paier below, darker above, lower ones 3-lobed, and petiolate, the upper 

 ovate, subsessile. Bractece opposite, lanceolato-linear. Flowers large and 

 handsome, very much resembling those of C. hicolor, to which it is cer- 

 tainly nearly allied, the lower opposite and solitary, the upper in crowd- 

 ed whorls. Calyx, like the common peduncle, glanduloso-pubescent on 

 the outside, coarsely hairy within, ventricose at its base, its rather short 

 blunt segments spreading. Corolla (gths of an inch long, above an inch 

 across in its longest diameter), with a few long hairs scattered over 

 the upper surface, slightly glanduloso-pubescent on the lower, the in- 

 side of the tube having long coarse hairs ; the lobes of the upper lip, 

 and the lateral lobes of the lower lip, rounded and crenate in the apex, 

 the central lobes straight and subacute, the prominent ridge projecting 

 into the throat from the upper lip subentire ; the colour of the flower 

 is deep lilac over the whole of the lateral lobes, except at the throat, 

 at the tip of the middle lobe, and at the tip and base of the upper lip, 

 every where else the flower is white, but in front of the upper lip the 

 white portion is sprinkled with lilac spots. Fertile stamens about as 

 long as the middle lobs of the lower lip ; filaments hairy along their 

 upper side ; anthers orbiculato-kidney-shaped, orange, bursting along 

 the edge, abortive stamen subvdate, green, without appearance of an- 

 ther. Pistil glabrous ; stigma minute ; style much declined ; germen 

 green, ovate. 

 Tliis, the handsomest species of Collinsia yet known, was found by Nxittall 

 on the Columbia, and was raised at the Experimental Garden, Edin- 

 burgh, by Mr James Macnab, from seeds transmitted to him imder 

 the name adopted, by Mr Buist of Philadelphia in spring last. From 

 CoUinsia grandifiora our plant is easily distinguished by its pubescent fi- 

 laments and calyx ; from C. parriflora and verna by its short peduncles ; 

 and from C. bicolor I have attempted to distinguish it, by its lobate 

 lower leaves, by the coarser hairs on its calyx, by the rounded (not 

 retuse) crenate segments of the corolla, by the subacute middle lobe of 

 the lower lip, and by the nearly entire border to the upper side of the 

 throat. It extremely nearly resembles C. bicolor, but the flowers are 

 larger, and the character, which I have given, may be sufficient to 

 satisfy many of its being a distinct species, though, 1 confess, scarcely 

 sufficient to take away my doubts. I have not, however, seen modified 

 forms run riot among North American as among South American spe- 

 cies, and therefore my scepticism is less than if the genus had been 

 met with south of the equator. The gorgeous display of Buenos Ayres 

 Verbenas which the houses in the Experimental Garden at present 

 contain, shews, by infinity of form and shade, and minuteness of gi^a- 

 dation, how few are species, compared with diversity in these parti- 

 culars. 



Edwardsia Macnabiana. 



E. Macnabiana ; foliis 20-jugis, elliptico-obovatis, supra glabris, subtus 

 villosiusculis ; vexillo rotundato, aniplo, alis breviori, basi subcor- 



nJ2 



