204 American Midland Naturalist Monograph No. 7 



below), smooth or nearly so; wooded slopes and ridges, 

 local. Aug.-Oct G. gattingeri Small 



22. Dasistoma Raf. — Mullein Foxglove 



D. macro phyila (Nutt. I Raf. Dry soil in woods near streams; 

 locally nearly throughout 111. Jidy-Aug. [Seymcria macrophylla Nutt.]. 



23. Buchnera L. — Blue Hearts 

 B. ami ricana L. Sandy soil, rare; Calhoun, Cook, Menard, and St. 

 Clair counties. July-Sept. 



24. Castilleja Mutis — Indian Paint Brush 

 1. Plants perennial, 10-30 cm tall; bracts green; corolla yellowish- 

 white, 4-5 cm long: gravelly or sandy soil in n. 111. June-Aug. 



C. sessiliflora Pursh 



1. Plants annual or biennial, 30-60 cm tall; bracts scarlet or yellow- 

 ish; corolla green, 2-2.5 cm long; moist ground nearly through- 

 out 111., except the southern counties. May- June 



C. coccinea (L.) Spreng. 



25. Pedicularis L. — Lousewort 



1. Stem 60-90 cm tall; leaves opposite, nearly sessile, shallowly lobed; 



spikes 5-10 cm long; lower lip of the corolla 10-12 mm long, 



nearly as long as the upper; capsules ovoid, scarcely longer than 



the calyx; swampy ground, southward to Macoupin and Wabash 



counties. Aug.-Oct P. lanceolata Michx. 



1. Stem 10-30 cm tall; leaves altei-nate, petioled, deeply lobed; spikes 

 10-20 cm long; lower lip of the corolla about 8 mm long, much 

 shorter than the upper; capsules lanceoloid, about three times 



as long as the calyx; sandy soil in open woods. May 



- ..P. canadensis L. 



26. Melampyrum L. — Cow-wheat 



M. linear c Desr. Moist ground, rare; Cook Co. June-Aug. [M. 

 americanum Michx.]. 



109. Bignoniaceae Pers. — Trumpet-creeper Family 



1. Trees; leaves simple, ovate. 



2. Leaves opposite; stamens 4; capsules ovoid; pith chambered or hollow 

 1. Paulownia 



2. Leaves usually in whorls of 3; stamens 2; capsules long-cylindrical; pith 



continuous 2. Catalpa 



1. Climbing or trailing shrubs; leaves compound; anther-bearing stamens 4. 



3. Leaflets 2, entire; leaves with a tendril; pods flat 3. Bignonia 



3. Leaflets 7-11, serrate; leaves without a tendril; pods cylindrical 



4. Campsis 



