Thaspium 



UM BELLI FERAE 



725 



^5 

 Map 1542 



Thaspium trifohatum var. flavum Blake 



50 



Map 1543 



Thaspium barbinode (Michx) Nutt 



50 



Map 1544 



Conioselinum chinense (L ) B S P. 



6076. THASPIUM Nutt. 



Margins of leaves and leaflets white and smooth; plants glabrous throughout; root- 

 leaves mostly cordate; basal leaves simple and cordate or ternate; leaflets 



thickish, crenate; flowers deep yellow; fruit globose-ovoid, about 4 mm long 



1. T. trifoliatum, var. flavum. 



Margins of leaves and leaflets green and more or less ciliate; plants puberulent at least 

 at the nodes; root leaves ternate; basal leaves mostly biternate; segments of 

 leaflets ovate to lanceolate, with a cuneate base, thin, incised, coarsely toothed or 

 ternately parted; flowers light yellow; fruit 4-6 mm long 2. T. barbinode. 



1. Thaspium trifoliatum (L.) Britt. var. flavum Blake. (Rhodora 20: 

 53. 1918.) (Thaspium aureum Nutt. and Thaspium trifoliatum (L.) 

 Britt.) Map 1542. Frequent in woodland throughout the state. Usually 

 restricted to wooded slopes along or near streams. It is to be noted that all 

 Indiana specimens have yellow flowers. 



N. Ohio and Md. to Wyo., southw. to Ga. and Ark. 



2. Thaspium barbinode (Michx.) Nutt. (Thaspium barbinode var. an- 

 gustifolium Coult. & Rose.) Map 1543. Frequent throughout the state in 

 rich woods and infrequent in prairie habitats, preferring alluvial soil along 

 streams and wooded slopes. 



This species is extremely variable in all of its parts and the form with 

 narrow leaf-segments has been named. Plants that grow in rich soil in 

 shady places usually have the leaf -segments large and ovate while plants 

 that grow in poor soil and prairie habitats usually have the leaf -segments 

 narrow. The nodes, peduncles, umbels, and furrows of the fruit are gen- 

 erally more or less pubescent with short, stout, colorless hairs (sometimes 

 only granulose). The nodes are always pubescent and rarely can a plant 

 be found that has the inflorescence nearly glabrous. Sometimes the pubes- 

 cence is conspicuous in the inflorescence and on the veins of the lower 

 surface of the leaflets. The flowers are sometimes cream-colored, and the 

 fruit varies in size and pubescence. I am not able to correlate the pubes- 



