short pubescence, bright green above, somewhat glaucous 

 below, middle-rib very strong, and with the veins pro- 

 minent below. Peduncles axillary, opposite, four-sided, 

 closely applied to the upper surface of the leaves, and (in- 

 cluding the pedicels) about a fifth of their length, pubes- 

 cent, bracteate, trifid, the lateral branches again dividing 

 in the same way ; pedicels like the peduncles, but less 

 distinctly angled. Bracteas lanceolate, entire, acuminate. 

 Calyx green, oblique, five-ribbed, five- toothed, pubescent 

 on the outside, persisting. Corolla (eight lines long, four 

 and a half across) yellow, bilabiate; tube elongated, com- 

 pressed laterally in its lower, vertically in its upper half, 

 nearly thrice the length of the calyx ; upper lip bifid, re- 

 volute, lower lip spreading forwards, plicate, trifid, revolute 

 at the apices, all the lobes rounded ; two very prominent 

 ridges, very hairy, and somewhat orange-coloured, extend 

 backwards into the corolla from the central lobe of the 

 lower lip. Stamens didynamous, included ; filaments gla- 

 brous, yellow, adhering to the corolla for about half their 

 length, connivent ; anthers bilobular, lobes divergent ; 

 pollen white. Pistil as long as the stamens ; stigma bifid, 

 white, lobes broad, revolute, upper surface pubescent; 

 style straight, white, filiform, glabrous, marcescent; germen 

 ovate, green, glabrous, four-valved, bilocular ; ovules very 

 numerous, attached to a large central receptacle, a trans- 

 verse section of which presents a kidney-shaped surface in 

 each loculament. 



This plant was raised in the garden of P. Neill, Esq. 

 at Canonmills, from Mexican seeds, communicated by Mr. 

 D. Don, as probably, a species of Conobea, and flowered in 

 the greenhouse, in September, 1830. Graham. 



Since the above was written, Mr. Don has had an oppor- 

 tunity, in the garden of Messrs. Whitley & Co., of examin- 

 ing specimens of this plant, flowering freely in the open 

 air, and has determined it to be a Mimulus, nearly allied to, 

 if not the same as, M. perfoliatus of Humboldt and Kunth. 

 Their description, indeed, so well accords with our plant, 

 that I have little hesitation in adopting the name. 



Fig. 1. Flower. 2. Back view of an Anther. 3. Front view of ditto. 4 - 

 Pistil. 5. Young Fruit : not. size. 6. Immature Capsule. 7. Section of a 

 nearly ripe Germen.— All but fig. 5, more or less magnified. 



