1926] Bahcocl-Lesley : Chromosomes and Taxonomic EelationsMps 329 



TABLE 2 



Tentative Classification of Twenty-one Species of Crepis, Arranged for 

 Comparison with Hoffmann 's Classification Shown in Table 1 



B. Pappus bristles longer. 



1. Inner or all the fruits long-beaked. 



2. Fruits large, the inner ones 10-18 mm. long. 

 Sec. II. Anisoderis. 



C. alpina, foetida, ruhra (figs. 1 and 2). 

 2*. Fruits small, the inner ones 5-7 mm. long. 

 3. Fruits all similar. 

 See. III. Barkhausia. 



C. bursifolia, sttosa, taraxacifolia (fig. 3, d, e, g). 



3*. Fruits of two shapes, the marginal ones winged. 

 Sec. IV. Nemauchenes. 

 C. aspera (fig. 3, h, /('). 

 1*. Fruits reduced at apex, but not beaked or only short-beaked. 



4. Inner involucral bracts conspicuously thickened or hardened in 

 fructiferous heads. 

 Sec. V. (Gatyona, Cymboseris, Phaecasium.) 

 C. Dioscoridls, palaestina, pulchra (fig. 4). 



4*. Inner involucral bracts not much thickened or hardened in fructi- 

 ferous heads. 

 5. Inner involucral bracts more or less spongy-thickened dorsally. 

 Sec. VI. Eucrepis. 



C. capiUaris, parviflora neglecta, tectorum, biennis, montana (fig. 5). 

 5*. Inner involucral bracts little or not at all changed. 

 6. Heads small, florets few, small. 

 Sec. VII. Youngia. 



C. japonica (fig. 6, v, v'). 



6*. Heads large, florets numerous, large. 



7. Plant short-stemmed, scapigerous, scapes 1-headed, rarely 

 2-3 headed. 

 S. Rootstock stoloniferous, forming tubers. 

 Sec. VIII. Aetheorrhiza. 

 C. bulbosa (fig. 6, u.) 



8*. Rootstock simple, non-tuberous. 

 See. IX. Omalocline. 

 C. aurea (fig. 6, w). 



7*. Plant long-stemmed, erect, foliate. 

 Sec. X. Soyeria. 



C. sibirica, bUdtarioides (fig. 6, .r; fig. 7, ij). 



Section XT, Catonia, is defined by Hoffman as including species 

 of at least two distinct groups, Omalocline Cass, and Soyeria Mann., 

 represented among our species by aurea on the one hand and by 

 hlattarioides and sibirica on the other. In other words, he has used 

 an ill-defined genus (Moench, 1794) as a catchall for species not 

 already assigned to sections. This would be more evident if we were 

 considering a larger number of species. Furthermore, hiaffarioides 



