120 ON SEEDLINGS 



Cotyledons shortly spathulate, tapered into a long petiole, entire 

 with a black gland at the apex, an indistinct midrib and a marginal 

 nerve best seen on the under surface, glabrous ; lamina 4-5 mm. 

 long, 2-5-3 mm. wide ; petiole flattened above, connate at the base 

 round the stem, 5-5-5 mm. long. 



Stem herbaceous, erect, terete, glabrous ; 1st internode 4-5 mm. 

 long ; 2nd 1-6-1-8 cm. 



Leaves nearly or quite glabrous, with indistinctly reticulate 

 venation ; petiole connate at the base, channelled above, with a few 

 hairs on the margin at the base. 



First pair spathulate, obtuse, entire, with long petioles. 



Second pair spathulate, or oblong-elliptic, obtuse, entire, with 

 long petioles. 



Third pair pinnatifid ; with about two pairs of lateral lobes, 

 linear, obtuse, entire ; terminal lobe lanceolate, obtuse, entire, 

 tapered to the base, much longer than the lateral ones. 



COMPARATIVE SIZE AND NUMBER OF FRUITS IN COREOPSIS. 



Coreopsis auriculata, L. Receptacle considerably elevated like 

 a torus, 3-25-5 mm. in diameter, bearing seventy to one hundred 

 and ten fruits or achenes, of which only five to fifteen ripened in the 

 specimens examined. Achenes 3-25-3-5 mm. long, 2-5-3-5 mm. wide, 

 75-1 mm. thick, slightly curved longitudinally and concave on the 

 ventral face. 



G. filifolia, Hook. Eeceptaele flat or slightly convex, 3-4-5 mm. 

 in diameter, bearing sixty-five to seventy-six achenes, of which four 

 to fifteen ripened in the specimens examined. Achenes narrow, 

 somewhat curved longitudinally, 3-75-4-25 mm. long, 1-25 mm. wide, 

 1 mm. thick. 



C. lanceolata, L. Receptacle convex, 4-5 mm. in diameter, 

 bearing seventy to eighty-five achenes. Achenes flattened, or 

 convex on the back, ciliated at the margins, terminating in two 

 teeth. 



C. latifolia, Michx. Receptacle flat, 3-4-25 mm. in diameter, 

 bearing eighteen to thirty achenes, of which very few (one to two 

 or more) ripened in specimens examined. Achenes oblong, com- 

 pressed, two-edged, with a ridge along each face, ending in two 

 very short blunt teeth, slightly curved longitudinally, 7-8 mm. 

 long, 2-25-2-75 mm. wide,*l-l'3 mm. thick. 



C. tinctoria, Nutt. Receptacle 3-5-5 mm. in diameter, 

 slightly convex, bearing one hundred to two hundred achenes, 

 of which forty to one hundred and forty-five ripened in speci- 

 mens examined. Achenes longitudinally curved, rounded and 



