760 



Apocynaceae 



Frasera 



Jan. 



Feb. 



Mar.' 



Apr. 



May 



June 



July 



Aug. 



Sept. 



Oct. 



Nov. 



Dec. 



Miles 



50 



Map 1631 



Menyanthes trifoliata var. minor Raf. 



6512. FRASERA Walt. 



1. Frasera carolinensis Walt. American Columbo. Map 1630. Infre- 

 quent to rare in all parts of the state. It is usually 4-8 feet high. Generally 

 in dry, clay soil, associated with white and black oaks. 



N. Y., Ont., and Wis., southw. to Ga. and Tenn. 



6543. MENYANTHES [Tourn.] L. 



[Fernald. Menyanthes trifoliata var. minor. Rhodora 31 : 195-198. 

 1929.] 



1. Menyanthes trifoliata L. var. minor Raf. (Menyanthes trifoliata L. 

 of American authors.) Buckbean. Map 1631. Frequent in tamarack bogs 

 and marshes in the lake area before these were drained; now becoming 

 rare. 



Lab. to the Rocky Mts., southw. to Va., Nebr., and Mo. 



247. APOCYNACEAE 'Lindl. Dogbane Family 



Leaves alternate 6591. Amsonia, p. 760. 



Leaves opposite. 



Plants small, evergreen, creeping or trailing, the erect stems usually 1-2.5 dm high; 



leaf blades mostly 1.5-4 cm long; flowers axillary, solitary, blue 



6598. Vinca, p. 761. 



Plants not evergreen, long climbing vines or large erect or diffuse perennials; leaf 



blades more than 5 cm long; flowers terminal, not solitary, white, cream or pink. 



Climbing vines; calyx glandular within; corolla funnel-shaped; filaments slender. 



6667. Trachelospermum, p. 761. 



Erect or rarely diffuse perennials; calyx not glandular within; corolla bell-shaped 

 or cylindric; filaments short, broad, and flat 6684. Apocynum, p. 762. 



6591. AMSONIA Walt. 



[Woodson. A monograph of the genus Amsonia. Ann. Missouri Bot. 

 Gard. 15: 379-434. 1928.] 



