402 



Santalaceae 



Comandra 



b 50 



Map 819 



Phoradendron flavescens (Pursh) Nutt 



50 



Map 820 



Comandra Richardsiana Fern. 



way says: "Fully 90 per cent of the white elm trees in the White and 

 Wabash Rivers bottoms are affected by this parasite. I saw it on no other 

 species except honey locust and elm." The more common hosts, however, 

 include Acer rubrum, Acer saccharinum, Gleditsia triacanthos, Jugkuis 

 nigra, Nyssu sylvatica, Quercus palustris, and Ulmus americana. I have 

 noted walnut trees almost killed by it in both Perry and Posey Counties. 



In 1934 I saw a large specimen growing on a very large native elm tree 

 in the yard of J. F. Schmid in sec. 18 of Spencer Twp. in Jennings County. 

 It was growing so high that I was unable to secure a specimen. 



N. J., s. Ind. to Mo., southw. to Fla. and Tex. 



69. SANTALACEAE R. Br. Sandalwood Family 



Leaves sessile; flowers in corymbiform cymes at the ends of the branches; style slender. 



2112. Comandra, p. 402. 



Leaves on short petioles; flowers in 1-3-flowered lateral cymes; style short 



2112A. Geocaulon, p. 403. 



2112. COMANDRA Nutt. 



Rootstock just beneath the surface; leaves lanceolate to ovate, thick, not paler be- 

 neath, when dried the lower surface obscurely veiny; inflorescence corymbose, 1-3 

 cm wide, of 1-few-flowered cymules on ascending branches. . . .1. C. Richardsiana. 



Rootstock underground; leaves oblong, thin, pale beneath, when dried the midrib pale 

 beneath; inflorescence, when fully developed, an ellipsoid-oblong panicle with the 

 cymules of smaller more numerous flowers on divergent branches. (See excluded 

 species no. 188, p. 1041.) C. umbellata. 



1. Comandra Richardsiana Fern. {Comandra umbellata in part, of 

 Britton and Brown, Illus. Flora, ed. 2.) Richards Bastard Toadflax. Map 

 820. Infrequent in dry, sandy soil under black and white oak in northern In- 

 diana and rare in a similar habitat in the southern counties. I have speci- 

 mens from three counties which were found in black, sandy soil in prairies 

 and a specimen from Lagrange County found in a drained tamarack bog 

 where it was associated with tamarack and poison sumac. Most of them 

 were seen by M. L. Fernald and he says that all of my specimens and all 



