NOTES ON TRILLIUM 327 



The absolute size of the flowers varies considerably, one of 

 Nuttall's type specimens having remarljably long and narrow sepals 

 and petals. The species can, however, be distinguished by the claw- 

 like, differently coloured base of the generally narrow greenish petals. 

 As Dr. Small indicates, its affinity is with T. recnrvatnm Beck. The 

 most nearly allied of the forms of T. sessile is the Carolina form of 

 Catesby, &c., which recalls T. viride in its erect petals with their 

 elongated narrow bases. 



Missouri, Arkansas. 



4. T. RECURVATUM Bcck ; Watson, /. c. ; Small, I. c. 174. 

 T. unguicidatum Raf. Bot. U.S. ii. 98 (1830). 



T. wiguiciilatum Nutt. in Trans. Amer. Phil. Soc. /. c. 155 (1837). 



Distinguished from T. viride by its stalked leaves, ultimately 

 recurved sepals, and proportionately broader petals. It is interesting 

 to note that the same name was given independently by Rafinesque 

 and Nuttall. Beck in the original description says, leaves " sessile or 

 on very short petioles." Can the " sessile" refer to the T. lanceo- 

 latum Boykin which Dr. Small considers a distinct species, but 

 which Watson {I.e. 274) made a variety of T. recnrvatnm? 



5. T. LANCEOLATUM Boykin ex Watson in Proc. Amer. Acad. xiv. 

 274 (1879) ; Small, I. c. 



T. recnrvatnm Beck, var. (?) lanceolatum Watson, /. c. 273. 



Specimens which I have seen from Kentucky {Short), Georgia 

 {Torrey), and others, favour Dr. Small's view, that this is a distinct 

 species. The plants have sessile lanceolate leaves, narrower than 

 in 2\ reciirvatiwi, and narrower petals. 



ii. Species with stalked flowers. Stigmas sessile. 

 Trillium erectnm series (Spp. 6-9). 



6. T. ERECTUM L. Sp. PI. 341 (1753) ; Watson in Proc. Amer. 

 Acad. xiv. 274 (1879), in part. 



T. rhomhoidenm Mich. Fl. Bor. Am. 215 (1803), excl. var. grandi- 



florum. 

 T,fcetidnm Salisb. Parad. Lond. t. 35 (1806). 

 T. petididnm Willd. Hort. Berol. t. 35 (1816). 

 Linnaeus's description runs, " TrilUum flora pedunculate erecto," 

 with these citations : — 



Paris fohis ternis, flora pedunculate aracto. Amcen. acad. i. 



p. 154. 

 Solanum triphyllum brasilianum. Baiih. pin. 167 \ prodr. 91; 



Burs. ix. 12. 

 Solanum triphyllum canadensa. Corn, canad. 166, 1. 167 [should 



be "t. on p. 167"]. 

 Solano congener tryphyllum canadense. Moris, hist. 8, p. 582, 



§ 18, t. 8,f. 7. 

 Habitat in Virginia. 



The reference Amoen. acad. i. p. 154 is to an annotated list of 

 the plants in the herbarium of Joachim Burser by one Roland 

 Martin. The plant in question, of which a description is given, 

 was received by Burser from a certain French doctor returning 



