103 



SILPHIUM L. Sp. PL 919 (1753). 

 Silphium integrifolium Michx. Fl. Bor. Am. 2: 146 (1803). 



One patch of it on a dripping limestone ledge, left bank of the Guad- 

 alupe, at Kerrville, altitude 1620 feet. Stems 4-6 feet high. 



June 20 (1895); type locality, Illinois. 

 Silphium laciniatum L. Sp. PL 919 (1753). 



A few plants were found on hillsides at middle elevations about Kerr- 

 ville, 1700-1850 feet. 



June 30 (1930); type locality, North America. 



BERLANDIERA DC. Prodr. 5: 517 (1836). 

 Berlandiera Texana DC. Prodr. 5: 517 (1836). 



Occasionally found in low, usually damp ground, along the Guada- 

 lupe and Town Creek, at Kerrville. 



June 1 6 (1874) ; type locality^ Texas. 



LINDHEIMERA Engelm. & Gray, Proc. Am. Acad. 1 : 47 (1846). 



Lindheimera Texana Engelm. & Gray, Proc. Am. Acad. i : 47 



(1846). 



A common plant about Kerrville, growing along roadsides and in 

 fields, altitude 1700-1900 feet. 



April 26 (1660) ; type locality, New Braunfels, Texas. 



ENGELMANNIA T. & G. FL N. A. 2 : 283 (1841). 

 Engelmannia pinnatifida T. & G. Fl. N. A. 2: 283 (1841). 



First collected along the upper end of Nueces Bay on a grassy bank, 

 later at San Antonio. At Kerrville it is very plentiful in stony ground 

 at an altitude of 1600-1650 feet. 



March 12 (1522); range, Arkansas to Texas. 



PARTHENIUM L. Sp. PL 988 (1753). 

 Parthenium Hysterophorus L. Sp. PL 988 (1753). 



Argyrochaeta bipinnatifida Cav. Ic. 4: 54, /. j?8 (1797). 

 One of the most common weeds at Corpus Christi, San Antonio, and 

 Kerrville. Not observed at any distance from either of the places named. 

 March-June (1418); type locality, Jamaica. 



AMBROSIA L. Sp. PL 987 (1753). 



Ambrosia artemisiaefolia L. Sp. PL 988 (1753). 



Several thick bunches of it found along the Southern Pacific Railroad 

 near the bridge, at San Antonio. 



May 3 (1696); type locality, Virginia, Pennsylvania. 



