Lithospermum 



BORAGINACEAE 



793 



50 



Map 1713 



Lithospermum incisum Lehm. 



50 



Map 1714 



Lithospermum canescens (Michx.) Lehm. 



50 



Map 1715 



Lithospermum croceum Fern. 



Leaves mostly oblong, lanceolate or narrow-lanceolate, rarely linear, mostly obtuse; 



corolla light to deep orange yellow, tube less than 15 mm long, generally without 



well developed crests in the throat. 



Corolla orange yellow, the ring of glands at the base within not hairy; leaves 



closely appressed canescent-pubescent above, the hairs about 0.6 mm long and 



not with a conspicuous papillose base; calyx lobes in anthesis 5-6 mm long; 



nutlets mostly 2.5-3 mm long 4. L. canescens. 



Corolla generally light yellow, the ring of glands at the base within hairy; leaves 

 loosely appressed-pubescent above; hairs fewer than in the preceding species, 

 about 1 mm long, arising from a conspicuous, transparent, papillose base; 



calyx lobes at anthesis more than 6 mm long; nutlets 3.5-4 mm long 



5. L. croceum. 



1. Lithospermum arvense L. Corn Gromwell. Map 1711. Frequent 

 to common in all parts of the state, mostly in sandy soil along roadsides 

 and railroads and in waste places, fallow, and cultivated fields. 



Nat. of Eu. and adjacent Asia and Africa ; Maine to Mont., southw. to 

 Fla. and La. ; also in B. C, Calif, and Utah. 



2. Lithospermum latifolium Michx. Map 1712. An infrequent to rare 

 plant throughout the state. Generally on wooded slopes adjacent to 

 streams and rarely in comparatively level woods. It has no particular tree 

 associates, but is more often associated with the oaks. 



Western N. Y. to s. Minn., southw. to e. Tenn. and Kans. 



3. Lithospermum incisum Lehm. (Kew Bull. 1934: 59. 1934.) (Litho- 

 spermum angustifolium Michx. and Lithospermum linearifolium Goldie.) 

 Map 1713. This rare species has been reported from only Putnam, Steuben, 

 Tippecanoe, and Vigo Counties. Grimes' specimens from Putnam and Tip- 

 pecanoe Counties are in the herbarium of DePauw University. Found in 

 sandy and gravelly open places. Infrequent along the roadside southwest 

 of Lafayette, on the gravelly terrace of Big Wea Creek west of the Wabash 

 Railroad. 



Ont. to Man. and B. C, southw. to Tex. and Chihuahua, Mex. 



4. Lithospermum canescens (Michx.) Lehm. PUCCOON. Map 1714. 

 Infrequent in dry, sandy prairie habitats, on dry, sandy knolls along road- 



