WILLOW FAMILY. 



503 



{6. Salix cordata Muhl. Heart-leaved 

 \\'illow. (Fig. 1198.) 

 lix cordata Muhl. Nene Schrift. Ges. Nat I'r lk-r- 

 in, 4. 236. pi. 6. f. j. 1803. 

 \ shrub, 5-i2 high, the twigs puberulent or 

 glabrous; young leaves pubescent. Mature leaves 

 oblong-lanceolate, green on both sides or paler be- 

 neath, acuminate at the apex, narrowed, obtuse or 

 subcordate at the base, sharply serrulate with glan- 

 dular teeth, green in drying; stipules oblique, ser- 

 rulate, usually large and persistent; petioles 4 // -o/ / 

 g; aments bracted at the base, expanding before 

 leaves, the staminate about i' long, the pistil- 

 i/^ / -2>2 / in fruit; scales silk> , persistent; sta- 

 ns 2; filaments glabrous; style short; capsules 

 rowly ovoid, acute, glabrous, 2"-$" long, short- 

 icelled. 



In wet soil, New Brunswick to British Columbia, 

 tth to Virginia, Missouri, Colorado and California. 

 bridizes with 5 1 . sericea and other species. April- 

 y. 



Salix cordata angustata (Pursh) Anders. Mon. Sal. 159. 

 i.\- anguslata Pursh, Fl. Am. Sept. 613. i - 

 Leaves narrower, linear-lanceolate. Range of the tj'pe. 



Salix cordata Mackenzieana Hook. Fl. Bor. Am. 2: 149. : 

 Small tree. Leaves lanceolate or oblanceolate. Manitoba and Northwest Territory t-> California. 



27. Salix glaucophylla Bebb. Broad- 

 leaved Willow. (Fig. 1199.) 



5. glaucophylla Bebb, in A. dray, Man. Kd. 6, 485. 1889. 

 A shrub, 4-io high, foliage glabrous or when 

 young sparingly pubescent. Mature leaves ovate, 

 obovate or oblong-lanceolate, firm, dark green and 

 shining above, white-glaucous beneath, short- 

 acuminate, the base rounded or acute, serrulate 

 with gland-tipped teeth, 2 / -4 / long, ^'-2' wide; 

 stipules large, persistent; petioles stout, 3"-6"long; 

 aments expanding before the leaves, leafy -bracted 

 at the base, the staminate i'-2' long, the pistillate 

 !%'-$' long in fruit; scales densely white- villous. 

 persistent; stamens 2; filaments glabrous; style fili- 

 form; capsule beaked from an ovoid base, acute, 

 glabrous, $"-$" long, slender-vedicelled. 



On sand dunes, I,ake Michigan, northern Illinois and 

 Wisconsin. Variable in leaf-form. April. 



1867. 



28. Salix Missouriensis Bebb. Missouri Willow. 



Sali-i- cordata var. vestita Anders. Mon. Sal. 159. 1867. 



Not S. restita Pursh, 1814. 

 Sali.v Missouriensis Bebb, Card. & For. 8: 373. 1895. 



A tree, often 50 high, the trunk sometimes i% in 

 diameter, the thin gray bark with small appressed 

 scales. Twigs of the season pubescent or puberulent; 

 leaves lanceolate, or oblanceolate, acuminate, finely 

 serrate with minute gland-tipped teeth, rounded or 

 narrowed at the base, pubescent when young, glabrous 

 or nearly so when mature, green above, pale and usu- 

 ally glaucous beneath, 3 / -6 / long, ^'-l,^' wide; 

 petioles %.' long or less; stipules often Y*' long, per- 

 sistent or deciduous; aments narrowly cylindric, un- 

 folding long before the leaves, the staminate about 

 i^Mong, the pistillate $'-4' long; scales persistent, 

 villous; stamens 2; filaments glabrous; style very 

 short; capsule narrowly ovoid, glabrous, 3-4 times as 

 long as its pedicel. 



On river banks. Missouri and Nebraska. Wood dark 

 brown. March-April. 



(Fig. 1200.) 



