NATURAL ORDER PRIMULACEZ. 
Tribe—PrimuLEz. Section of genus Primula, having a ‘calyx much 
shorter than the tube of the corolla, and the young leaves rolled inwards. 
Puate XI.—Primula marginata. Curtis. Woods, P. crenata Lamarck. 
De Candolle. 
GENERIC.— Capsule many celled, with five entire or bifid teeth. 
Stamens 5, opposite the lobes of the corolla, on the tube of which they 
are inserted. ) 
Corolla salver-shaped, with a cylindrical tube. Calyx campanulate, or 
tubular. 
Flowers dimorphic ? 
Sreciric.—/lowers bright lilac, mealy or not at the throat, dimorphic. 
Inwolucre composed of oval phyllaries. Capsule sub-globular, about 
equal the calyx. Calyx with rounded teeth, the margins of which are 
covered with white meal. Leaves oboval, having their crenately-toothed 
margins edged with white meal. Plant free from viscidity, or any kind 
of pubescence ; abounding in mealy powder. 
EXPLANATION OF Pirate XI.—Plate XI. represents Primula margi- 
nata, a plant named by Curtis in the “ Botanical Register,” where a 
figure is given (vol. lxvii., p. 191). Figs. 1 and 2 show the calyx and 
part of the tube of the corolla taken from two distinct plants, and 
exemplify the two forms or dimorphic condition. Fig.1 is of the long- 
styled form ; fig. 2. of the short-styled. 
Remarks.—I must again attempt to give a very brief outline of some 
of the facts recorded by Mr. Darwin, (see “ Journal of Proc. of Linn. Soc.,” 
March 8th, 1862,) with reference to this genus; not that any such 
mere sketch can suffice to give any adequate conception of his many 
careful observations, so laboriously made and so concisely reported ; but 
that perhaps this notice may afford some guide to those who have not 
studied the paper, and might otherwise bestow no second glance upon 
Pin or Thrum-eyed primroses. 
Pin and Thrum-eyed primroses are familiar to most children, where 
in the former the stigma, and the latter the stamens, are seen in the 
throat of the corolla. Now, it seems very possible that the whole genus 
Primula is in the same condition, and Mr. Darwin, in the paper before 
