Jones: Flora of Illinois, 138. Lentibulariaceae 231 



6. Stem usually much-branched, nearly terete (at least below), smooth or 



nearly so; wooded slopes and ridges, local. Aug.-Oct 



G. gatt'tngeri Small 



18. Dasistoma Raf. 



D. macrophylla (Nutt.) Raf. Mullein Foxglove. Dry soil in woods near 

 streams; often parasitic on the roots of Aesculus. July- Aug. 



19. BUCHNERA L. 



B. americana L. Blue Hearts. Sandy soil, rare. July-Sept. Chicago, Bab- 

 cock; Menard Co., Hall. 



20. 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, n. 111.; known from Winnebago, Mc- 

 Henry, Lake, and Du Page counties. June-Aug C. sessiliflora Pursh 



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

 green, 2-2.5 cm. long; moist ground, throughout 111., except the most 

 southerly counties. May-June C. coccinea (L.) Spreng. 



21. Pedicularis L. 



1. Stem glabrous or nearly so, 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. Aug.-Oct P. lanceolata Michx. 



1. Stem pubescent, 10-30 cm. tall; leaves alternate, 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. 



22. Melampyrum L. 



M. lineare Desr. Moist ground, rare. June-Aug. Cook Co., Moffatt. [M. 

 americanum Michx.} 



138. Lentibulariaceae Lindl. — Bladderwort Family 



1. Utricularia L. — Bladderwort 



1. Pedicels recurved in fruit. 



2. Flowers 1-2 cm. long, the spur conspicuous, slightly curved upward; ponds 

 and slow streams, chiefly in the n. half of the state; the common spe- 

 cies in 111. July- Aug. \U. vulgaris var. americana Gray; U. macrorhiza 

 Le Conte} U. vulgaris L. 



2. Flowers 4-6 mm. long; spur short, blunt, almost obsolete; lake shores or 



stagnant water. Lake Co., Hill; Ringwood, Vasey U. minor ^■^\g%^^ 



1. Pedicels erect or ascending in fruit; spur evident. y V>* ^ 



3. Stems slender, elongated, creeping in the mud or floating. y^^ 





LIB 



