KHINANTHACEAE 1073 



pinnatifid, the segments linear or oblong : pedicels mostly 2-5 mm. long : calyx-lobes pu- 

 bescent, oblong to oblong-lanceolate, 3-4 mm. long, obtuse : corolla glandular without ; 

 limb stout, less than 1 crn. broad, the lobes oval or oval-orbicular : filaments pubescent : 

 capsules 5-6 mm. long, glandular. [Seymeria bipinnatisecta var. Texana A. Gray.] 

 On prairies, Texas and probably in adjacent Mexico. Summer. 



31. BRACHYGYNE Small. 



Perennial sparingly branched caulescent berbs. Leaves opposite, relatively large, 

 the lower ones often ample : blades pinnately parted or pinnatifid, the segments toothed 

 or pinnatifid. Flowers solitary in the axils of leaf-like bracts, sessile or nearly so. Calyx 

 of 5 sepals usually united to beyond the middle into a campanulate or hemispheric tube, 

 the lobes therefore shorter than the tube. Corolla yellow, with a short funnelform tube 

 and spreading lobes much dilated at the base. Stamens 4, nearly equal, included : fila- 

 ments densely pubescent : anthers oblong ; sacs united. Style columnar, included : stigma 

 dilated and 2-lobed. Capsule with a very short flattened apex. 



1. Brachygyne macrophylla (Nutt. ) Small. Stems finely pubescent, 9-15 dm. tall : 

 leaf-blades 1-4 dm. long, twice pinnately parted and pinnatifid near the base of the stem, 

 to merely pinnatifid above : calyx 5-8 mm. long ; tube campanulate, the lobes oval, ovate or 

 lanceolate, mostly shorter than the tube, obtuse : corolla about 1 cm. long ; lobes reniform, 

 at least broader than long : capsules ovoid-globose, 7-8 mm. long, acute. [Seymeria macro- 

 phylla Nutt. ] 



In thickets and fence corners, Iowa to Ohio, Kentucky, Nebraska and Texas. Summer and fall. 



32. DASYSTOMA Raf. 



Annual biennial or perennial caulescent herbs, usually with pubescent or glandular 

 foliage. Leaves mostly opposite : blades entire, toothed or 1-2-pinnatifid. Flowers in 

 bracted racemes or panicles. Calyx of 5 partially united sepals: tube campanulate or 

 turbinate : lobes entire or toothed. Corolla yellow, slightly irregular : tube funnelform : 

 lobes 5, spreading. Stamens 5, didynamous, included : filaments pubescent : anthers 

 alike ; sacs distinct, parallel, awned at the base. Capsule acute, short or long-beaked, 

 loculicidal. FALSE FOXGROVE. 



Annual or biennial : corollas pubescent or glandular without. 



Pedicel shorter than the calyx at maturity : calyx-tube densely glandular-hirsute. 



1. D. pectinata. 



Pedicel longer than the calyx at maturity : calyx-tube sparingly glandular- 

 pubescent or glabrate. 2. D. Pedicuiaria. 

 Perennial : corollas glabrous without. 



Stems manifestly pubescent or puberulent. 



Upper leaves and bracts with pinnatifid blades. 3. D. grandiflora. 



Upper leaves and bracts with entire blades, or merely toothed. 

 Pedicel shorter than the calyx. 



Upper leaves and bracts with toothed blades. 4. D. serrata. 



Upper leaves and bracts with entire blades. 

 Ra 



iemes continuous : flowers approximate : calyx usually densely 



pubescent. 



Capsules about 1 cm. long, scarcely beaked. 5. D. brachycarpa, 



Capsules about 1.5 cm. long, long-beaked. 6. D. flava. 



Racemes much interrupted : flowers remote : calyx puberulent or 



glabrate. 7. D. dispersa. 



Pedicel longer than the calyx! 8. D. patula. 



Stems glabrous. 



Lower leaves with 1-2 pinnatifid blades. 



Upper leaves and bracts of a spatulate type, entire. 9. D. bignoniiflora. 



Upper leaves and bracts of a lanceolate type, toothed or pinnatifid. 10. D. Virginica. 



Lower leaves with entire, repand or incised blades. 11. D. laevigata. 



1. Dasystonia pectinata (Nutt.) Benth. Annual or biennial, copiously glandular- 

 hirsute. Stems 5-10 dm. tall, widely branched : leaf- blades lanceolate to ovate, 2-7 dm. 

 long, 1-2-pinnatifid, the segments finely toothed or incised : pedicel shorter than the calyx 

 at maturity : calyx densely glandular-hirsute ; lobes incised or pinnatifid, somewhat re- 

 sembling the leaves, much longer than the tube : corolla 3-4 cm. long ; tube widely dilated : 

 capsules oval or elliptic, 10-13 mm. long, acute, surpassed by the calyx-lobes. 



On hillsides and in sandy soil, Missouri to Georgia, North Carolina and Texas. Summer and fall. 



2. Dasystonia Pedicuiaria (L. ) Benth. Annual or biennial, puberulent or sparingly 

 glandular pubescent above. Stems 3-12 dm. tall, widely branched : leaf-blades lanceolate 



68 



