1966 



MAGNOLIA 



MAGNOLIA 



ers 8 to 10 inches in diameter, white: leaves 10 to 21 

 inches long, 6 to 8 inches broad. Found from Penn- 

 sylvania to Mississippi. 



INDEX. 



KEY TO THE SPECIES. 



A. Blossoms appear after or with the fas.: 

 fr. subglobose to oblong, cone-like, 

 usually symmetrical. 

 B. Foliage deciduous. 

 c. Fls. white, large. 

 D. Base of Ivs. cordate. 



E. Lf.-buds and branches tomen- 

 tose: Ivs. scattered, 20-80 



in. long 1. macrophylla 



EE. Lf.-buds and branches gla- 

 brous: Ivs. crowded at the 

 end of the flowering branch- 

 lets, 5-12 in. long. 

 F. Lvs. acute: tips of mature 



carpels nearly straight . . . 2. Fraseri 

 FF. Lvs. obtusely pointed: tips 

 of mature carpels in- 

 curved 3. pyramidata 



DD. Base of Ivs. narrowed, rarely 



rounded or subcordate. 

 E. Length of Ivs. 524 in-! fas. 

 crowded at the end of the 

 branches: buds and branch- 

 lets glabrous. 

 F. Filaments whitish: fr. 2%- 



4 in. long. 

 G. Fls. 8-10 in. across: Ivs. 



12-24 in. long 4. tripetala 



GG. Fls. 5-6 in. across: fas. 



5-9 in. long 5. Thompsoni- 



FF. Filaments purple: fr. 5- [ana 



7% in. long 6. hypoleuca 



EE. Length of Ivs. 37 in.; fas. 



scattered. 



F. Shape of fas. elliptic-oblong 

 to oblong-lanceolate, 3-5 

 in. long. 



G. Under side of fas. gla- 

 brous except the rufous- 

 pubescent midrib 7. Nicholsoni- 



GG. Under side densely [ana 



silky tomentose 8. Wilsonii 



FF. Shape of Ivs. oval to elliptic, 

 sparingly appressed 

 pubescent beneath or gla- 

 brous, 4~7 in. long. 

 G. Peduncles and petioles 

 glabrous or nearly so: 



fts. short-stalked 9. Watsonii 



GG. Peduncles and petioles 

 pubescent: fls. slender- 

 stalked 10. parviflora 



cc. Fls. greenish or yellow: 4vs. 710 

 in. long, sometimes rounded or 



subcordate at the base 11. acuminata 



BB. Foliage evergreen (half-evergreen or 



deciduous N. in No. 12). 

 c. Petals 6-12; fls. upright. 



D. Lvs. glabrous or silky pubescent 



beneath. 

 E. Number of petals 9-12: 



deciduous or halj "-evergreen. 12. glauca 

 EE. Number of petals 7 or 8: ever- 

 green trees. 



F. Length of fas. 5-7 in., 

 obtusely acuminate : 



petals 1% in. long 13. splendens 



FF. Length of fas. 8-12 in., 

 usually rounded: petals 



4 in. long 14. Delavayi 



DD. Lvs. ferrugineous -pubescent 

 beneath: petals 6-12, 3-5 in. 



long 15. grandiflora 



cc. Petals 6; sepals green; fls. nodding, 



globular, 1% in. across 16. Coco 



AA. Blossoms appearing before the fas. 



(with the Ivs. in No. 19): fr. cylindric, 



unsymmetrical, usually curved and 



twisted. 



B. Sepals 3, narrow and much shorter 



than petals. 

 c. Fls. white. 



D. Lvs. oblong-lanceolate or nar- 

 row-elliptic, broadest below the 



middle, membranous 17. salicifolia 



DD. Lvs. obovate to obovate-oblong, 

 broadest above the middle, 



chartaceous 18. Kobus 



cc. Fls. purple, rarely nearly white. 

 D. Sepals much shorter than petals, 

 green, lanceolate; petals pur- 

 ple outside 19. liliflora 



DD. Sepals usually half as long as 

 petals,_ usually petaloid; fls. 



sometimes nearly white 20. Soulangeana 



BB. Sepals and petals alike. 



c. Petals 9, usually white: fas. obo- 

 vate, 3-6 in. long 21. denudata 



cc. Petals 9-18. 



D. Lvs. obovate-oblong, 2-8% in. 

 long: fls. 3 in. across, usually 



white 22. stellata 



DD. Lvs. elliptic to elliptic-oblong, 

 5-12 in. long: fls. 6-10 in. 

 across, pink outside 23. Campbellii 



1. macrophylla, Michx. LARGE-LEAVED CUCUMBER 

 TREE. Tree, to 50 ft., with spreading branches: Ivs. ob- 

 long-obovate, blunt, subcordate-auriculate at the base, 

 glaucescent and finely pubescent beneath, 1-3 ft. long: 

 fls. cup-shaped, fragrant, 10-12 in. across; petals 6, ob- 

 long-obovate, thick, purplish at the base, 6-7 in. long: 

 fr. broadly ovate, rose-colored, to 3 in. long. May, June. 

 Ky. to Fla., west to Ark. and La. S.S. 1:7, 8. B.M. 

 2981. G.F. 8:165. Gn. 22, p. 28; 24, p. 509; 33, p. 539. 

 F.R.S. 1, p. 14. F.E. 14, p. 23. G.C. III. 28:324. Gn. 

 M. 7:230. 



2. Fraseri, Walt. (M. auricvlata, Lam.). Tree, to 

 40 ft., with wide-spreading branches, quite glabrous: Ivs. 

 spatulate-obovate, cordate-auriculate at the base, acute, 

 glaucescent beneath, 8-20 in. long: fls. 6-9 in. across, 

 sweet-scented; petals 6-9, oblong-obovate, contracted 

 below the middle, 4-5 in. long: fr. oblong, bright rose- 

 red, 3-5 in. long. Va. to Fla., west to Miss. S.S. 1:11 

 and 12. B.M. 1206. Gn. 22 p. 27; 24, p. 511; 44, 

 p. 935. F.E. 33:1071. Gn.M. 5:150. C.L.A. 5:494. 



3. pyramidata, Pursh. Slender tree, to 30 ft., with 

 ascending branches, glabrous: Ivs. obovate-spatulate, 

 cordate-auriculate at the base, abruptly nan-owed into 

 a blunt point, glaucescent beneath, 5^-8^ in. long: 

 fls. 3J^-4 in. across; sepals much shorter than petals; 

 petals 6-9, oblong-obovate, gradually narrowed toward 

 the base: fr. oblong, bright rose, 2-2 1/2 in. long. June. 

 Ga. to Fla. and Ala. S.T.S. 1 :51. S.M. 324. B.R. 407. 

 L.B.C. 11:1092. 



4. tripetala, Linn. (M. Umbrella, Lam.). UMBRELLA 

 TREE. Tree, to 40 ft., with spreading branches, forming 

 an open head: Ivs. tapering toward the base, oblong- 

 obovate, acute, pale and pubescent beneath when 



