// IL TMORK B O TA NIC A L S 71 U) IBS 



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three, erect, half as long again as the calyx, obovate, very ob- 

 tuse, with a short blunt mucro, of a pale sulphur-yellow inclining 

 to green, tapering below into a broad and pale green claw. 

 Stamens six, about one-third the length of the petals, erect : 

 Filaments very short, purple. Anthers linear, dull purple, acute, 

 and a little incurved at the extremity, the cells lateral, longitudinal, 

 yellow. Pistil: Germen ovate, three-lobed, with two prominent 

 angles at the margin of each lobe, purplish-green. Styles linear- 

 obtuse, purple without, yellow within." 



Trillium discolor was first observed by the writer in the spring of 1887, 

 in the mountainous region of South Carolina. The following spring it was 

 found growing in a shaded situation along a rocky stream in the adjacent re- 

 gion of North Carolina. On a subsequent occasion it was collected at several 

 stations in the northern part of South Carolina and is represented by a speci- 

 men in the Biltmore Herbarium collected in April, 1897. This species seems 

 to be confined to a limited range and is apparently quite rare. The specimens 

 observed by the writer agree essentially with the original figure and descrip- 

 tion. The short, blunt mucro is, however, not a constant character. In many v 

 plants the petals are acute or abruptly acuminate, and abruptly acuminate 

 leaves are common. Blooms in March and April. 



Trillium luteum (Muhl.) 



Trillium sessile L., Muhlenberg's Cat. 38, 1813. Var. luteum. Calyx : 

 3ph. Corolla : 3 pet. lut. Habitat : Tennessee. 



Dr. Muhlenberg in a manuscript volume preserved in the 

 library of the Philadelphia Academy of Natural Sciences, under 

 the title Observationes Botanicae de Plantis Americans Sep- 

 tentrionalis," describes the form under consideration as a variety 

 of T. sessile L. , as follows : 



' ' Caule : 



foliis : ternis maculatis ovatis, acutis sessilibus trinervis. 

 flore : terminali sessili. 



Calix : 5-phyll. lanceolat. subovatus patulus. 



Corolla : 3-petala lutea, petalis lanceolatis striatis, calice diplo longiori- 

 bus erectis. 



Stamens : 6 antheris luteis pistillo longioribus, filamentis brevibus. 

 Pistils : stilis 3 antheris paulo brevioribus. " 



This yellow sessile-flowered Trillium exhibits another instance 

 in which a remarkably constant and distinct form has been dis- 

 carded, simply because it has not come under our observation. It 

 is, perhaps, the yellow Trillium referred to by Pursh, 17 where he 



I? Pursh, Fl. Am. Sept. 244, 1814. 



