1922] 



BURT — THE NORTH AMERICAN SPECIES OF CLAVARIA 5 



probable spores 3-4X3^; in China 104. C. decolor 



17. Fructifications 2-6 cm. high, with branches numerous, flattened upward 



and cristate; spores even, 9-12X6—8^ 40. C. cristata 



17. Fructifications 3 cm. high, cespitose, drying with branches somewhat 



flattened, becoming bright antimony-yellow in the herbarium; spores 

 6-8X6 ^ 41. C. mutans 



17. Fructifications solitary or in small groups, simple or somewhat branched 



above, rugose, becoming antimony-yellow in the herbarium ; spores 



even, 9-11X8-9^ L 42. C. rugosa 



18. Fructifications very small, 2 cm. high, branched above, base of 



stem rufous; spores even, 4-6X3-4^ 43. C. rufipes 



18. Fructifications 1-4 cm. high, dichotomously branched; spores be- 

 coming rough 44. C. aspcrula, 45. C. asperulans 



19. Fructifications 3-4 cm. high, flour-white, soft, many branches flattened; 



spores tuberculate 46. C. nodulosperma 



19. Fructification 4 cm. high, forked above five or six times, slender; spores 



echinulate, 3J-4X24-3/*; in Brazil. Probably a Lachnodadium 



109. C. dealbata 



20. Growing on wood, 3-10 cm. high, pallid, then alutaceous, somewhat 

 reddish; branches and branchlets hollowed out into cup-shape at 



the apex and with margins of the cups proliferous 47. C. pyxidata 



20. Growing on wood but only 5 cm. high, branches and branchlets not 



hollowed out cup-shaped at the apex; spores 4X2-2A/X 



48. C. Petersii 



20. Growing on wood, pale yellow, then fawn-color, final branchlets 



encircled with crown of minute processes; spores 3-6X2-3 p 



49. C. coronata 



20. Growing on the ground, 2-5 cm. high; spores subglobose, 9^X8-9 /jl; 



not fleshy. A LachnocJadium 99. C. ornatipes 



20. Growing under bark, alutaceous white, dichotomously branched, 

 minutely subtomentose ; not fleshy. Probably a Lachnodadium. 



100. C. subcorticdlis 



20. Growing on the ground, 2-3 cm. high, divided from the base, 

 branches compressed; basidia longitudinally septate. A Trem- 



eJlodendron 102. C. tenax 



21. Spores ovoid or cylindric 22 



21. Spores globose or subglobose 24 



22. Spores not even 23 



22. Spores even, flexuous, 13-15X3^-4^; fructifications 2-4 cm. high; 



in pine woods 50. C. pinophila 



23. Fructifications 5-7 cm. high, ochraceous; spores 4-5X2^-3 /*, with slender 



spines 51. C. asterella 



23. Fructifications 5-10 cm. high; branches widely spreading, pale ochraceous; 



spores 11-13X4^, distinctly rough 52. C. divaricata 



4. Growing on wood, 15 cm. high, with stem 2-3 cm. thick; spores 



asperulate, 6X5 /x 53. C. lentofragilis 



24. On leaves and twigs in Brazil, 1 cm. high, ochraceous; spores 



even, 4-5 fi in diameter 105. C. dcJicia 



24. Growing on the ground; stem tough, tomentose, pale yellow; 

 branches orange ; spores 3—4 ^ in diameter. A LachnocJadium. 



101. C. vestipes 



24. Growing on the ground; not tomentose 25 



25. Fructifications apricot-yellow, 3-4 cm. high; spores even, 5-7 p in diam- 

 eter 54. C. corniculata 



25. Fructifications pale yellow, 2-5 cm. high, tips of branches obtuse; 



spores even, 7-9X6-7^, mostly 7X6 fi 55. C. PecMi 



25. Fructifications ochraceous yellow, 2-4 cm. high, tips of branches obtuse; 



spores even, 5-6X4^-5^ 56. C. muscoides var. obtusa 



25. Fructifications ochraceous yellow, 2^ cm. high, tips of branches obtuse; 



taste bitter; spores 5-6^ in diameter 57. C. fellea 



25. Fructification golden yellow, with aspect of a dried specimen of C. 



rugosa; spores even, 8-9 fx in diameter. 58. C. Herveyi 



26. Fructifications 3-5 cm. high; basidia with 2 sterigmata; spores 



9 



