Dasystoma flava and some related Species 



By John K. Small 



Dasy 



herbaria at the New York Botanical Garden indicate a segregation 

 of species in the Dasystoma flava group as follows : * 



Key to the Species 



Upper leaves and bracts with pinnatifid blades. I. D. grandifiora. 



Upper leaves and bracts with entire or merely toothed blades. 

 Pedicel shorter than the calyx. 



Upper leaves and bracts with toothed blades. 2. Z>. serrata. 



Upper leaves and bracts with entire blades. 



Racemes continuous : flowers approximate : calyx densely pubescent. 

 Capsules about I cm. long, scarcely beaked. 3. D. brachycarpa . 

 Capsules about 1.5 cm. long, long-beaked. 4. D. flava. 

 Racemes much interrupted : flowers remote : calyx glabrate or merely 



puberulent. 



5. D. dispersa 



Pedicel longer than the calyx. 6. D. patula. 



Texas. 



1. Dasystoma grandiflora (Benth.) Wood 



'ia grandifiora Benth. Comp. Bot Mag. I : 206. 1835. 



nna grandifiora Wood. Bot. & Flor. 231. 1873. 



n woods, Wisconsin and Minnesota to Tennessee and 



2. Dasystoma serrata (Torr.) 



Gerardia serrata Torr.; Benth. in DC. Prodr. 10 : 521. 1846 



Perennial, grayish puberulent or finely pubescent. Stems 4-1 2 

 dm. tall, often widely branched : leaf-blades pinnatifid on the lower 

 part of the stem and their segments entire, merely serrate and much 

 smaller above : calyx -tube 5-6 mm. broad during anthesis ; lobes 

 hnear-lanceolate to lanceolate, entire: corollas 2.5-4 cm. long: 

 capsules ovoid or globose-ovoid, 1-1.5 cm. long, short-beaked. 



In dry soil, Missouri to Louisiana and Texas. 



Louisiana : Hale, no. 249. 



Missouri : McDonald County, Bush, no. 272 ; Swan, Bush, 

 no. 677. 



Species hitherto undescribed and newly combined binomials are indicated by 

 heavy face type. 



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