610 ROSACEAE — 
15 mm. long; blades a or a pic dris ILE 6.5-9.5 m 
long, slender- o a glabro with few hairs. [G. st ue 
Muhl.]—(AMERICAN IPE oo oods ETE thickets, dns = calcareous soil, 
various provi n chi fy W of Blue Ridge, extending into Piedmont and 
Atlantie Coastal Plain only in river eu Ga. to La., Kans., and N. Y. 
FILIPENDULA [Tourn.] Hil. Perennial inii herbs.  Leaf- 
we pinnate. Flowers numerous, borne in eorymbose cymes. Sepals entire. 
Petals broad, white, pink, or purple. Carpels - 
5-15: style short: stigma capitate. Achene 
eapsule-like.—About 10 species, natives of 
the north temperate zone.—MEADOW-SWEETS. 
1. F. rubra (Hil) B. L. d Plant 
5-24 dm. tall: lower leaves dm. tall; 
blades of the leaflets palmate a 3-5 ‘lobed: 
sepals almost half-orbicular: petals 
mm. long, pink or aa the blades iub. 
orbicular: fruits mm. long, clavate. 
[ Spiraea ae Chapin. FI. — ( PRAIRIE- 
oo QUEEN-OF-THE-PRAIRIE. )— 
Swamps duos w grounds, Blue Ridge and 
more : "provinces Ga. to Ia., Pa., and Vt.— 
Spr.-s 
6. POTENTILLA L. Herbs or de) woody plants.  Leaf-blades 
pinnately or digitately foliolate. Flowers in corymbose cymes or solitary. 
Petals white, yellow, red, or purple, rer Receptacle hemispherie or 
conic. Carpels and achenes ovoid.—About 325 species, natives of the north 
temperate zone.—CINQUEFOILS.  FIVE-FINGERS. MEADOW-STARS.—Our species 
all have yellow flowers. 
Flowers solitary, on long axillary pedicels: plant perennial. I. TORMENTILLAE. 
Flowers cymose: cymes many-flowered, leafy bracted : plant an- 
II. SUPINAE. 
I. TORMENTILLAE 
Stem, branches, petioles, and pedicels with appressed pubescence. 
Lea flets sparingly silk or strigose: B oblanceolate, n iu ae “or 
rarely obovate. toothed except at the 1. mpler 
Leaflets densely silky beneath ; blades of hose of the basal 
M nage alas toothed only at the apex or above 
the 2. P. pumila. 
Stem, T E and pedicels with spreading hairs. 
la es o „the leaflets obovate or oblanceolate, appressed- 
pubesce 3. P. canadensis. 
Bl rus E the leaflets cuneate, pubescent with long lax 
hai . P. caroliniana. 
II. SUPINAE 
Achene corky-gibbous on the upper suture: core less than 8 
mm. wide: lower leaves with 9-11 leaflet . P. paradoaa. 
Achene not gibbous : corolla over 9 mm. wide: lower leaves 
with 3-5 leaflets 6. P. monspeliensis. 
1. P. simplex Michx. Stem erect or early decumbent, 4-10 dm. long, ap- 
pressed- a a leaflets 2-6 em. long; mostly 5; blades Enn c elliptic- 
