ASTER SYMPODIALIS 365 
radical group of this date had been producing radicals without 
flowering for 6 preceding years, fide its leaf-scars ; and had made 
only 3 inches growth in that time. 
Habitat, rich shaded banks, near TORENS, WOY. 
Examples : 
Bryn Mawr Park, scattered p north of sta., near railroad, Se. 5, '98, 
Bi, in hb. Zz.; and de above Mayflower-brook, near poto OE 5. 760. Bi 
typical diy: ; scattered plants, with ibd 5X3% in y 13; continuously 
in abundant bloom, '99-1904 ; mostly Piet by zealous fiver: 905. 
Subdivision B 
Plants smaller, chiefly 2 ft. or less ; radicals fewer or smaller, 
mostly 3, chiefly 5 in. long or less. Sp. 71-70.: 
* Inflorescence with flattish top ; hair usually little developed ; 
glands minute, less widely distributed ; leaves firm, thinnish. Sp. 
71-73. 
f Inflorescence deeply V-shaped; with high and slender 
straight branches. 
71. Aster securiformis sp. nov. 
Plants of moderate height and breadth, with straight glabrate 
slender stem, long smooth slender petioles, cordate-acuminate 
leaf-form, firm thinnish roughish texture, close sharp teeth, broad 
deep sharply-recurved or securiform sinus, cordate petioled middle 
leaves, oblong-acute sessile upper leaves and axiles, and sharply- 
acute pale uniform bracts. 
Name; L., — Ji£e a battle-axe, from the sinus. 
Fic. 93, plant from Rock Cr., near Washington, D. C., Au. 25, '76, Z. F. 
Ward in hb. Bu.; with characteristic leaf and radicals. 
Stem 21% ft. often, pale brown or sometimes dark, from a long, 
stout, dark and very fibrous rootstock. 
Radicals cordate-acute, sometimes 7 x 5 in., with sinus I in. 
broad and deep. 
Leaf-type cordate-ovate, incurved-acuminate, with elegantly- 
curved symmetrical sides and diminished rounding bases, apple- 
green, thin but firm, glabrate but with strigose hair on the veins 
neath, crenate or serrate with strong forward-directed aculeus. 
Sinus-type securiform, or bounded by three curves meeting at a 
Sharp, reéntrant angle, an inch deep ea broad or less, of square 
aspect or soon more shallow and o 
Lower caulines and middle ones anum or passing into ovate- 
