116 KOSACEJE. (ROSE FAMILY.) 



8. DRY AS, L. DBYAS. 



Calyx flattish, 8-9-parted. Petals 8-9, large. Otherwise like Geum $ Sie- 

 vorsia. Dwarf and matted slightly shrubby plants, with simple toothed leaves, 

 and solitary large flowers. (Name from Dryades, the nymphs of the Oaks, the 

 foliage of some species resembling oak-leaves in miniature.) 



1. I>. integfrifdlia, Vahl. Leaves oblong-ovate, slightly heart-shaped, 

 with revolute margins, nearly entire, white-downy beneath, flowers white. 

 White Mountains, New Hampshire, Prof. Peck, according to Pursh ; but not 

 since met with : therefore very doubtful. (Eu.) 



9. GI^UM, L. AVENS. 



Calyx bell-shaped or flattish, deeply Srcleft, usually with 5 small bractlets at 

 the sinuses. Petals 5. Stamens many. Achenia numerous, heaped on a coni- 

 cal or cylindrical dry receptacle, the long persistent styles forming hairy or 

 naked and straight or jointed tails. Seed erect. Perennial herbs, with pin- 

 nate or lyrate leaves. (Name from ytvo, to give an agreeable flavor, the roots 

 being rather aromatic.) See addend. 



1. GEUM PROPER. Styles jointed and bent near the middle, the lower portion 

 smooth and persistent, naked, hooked at the end after the deflexed and mostly hairy 

 upper joint falls away : head of fruit sessile : calyx-lobes reflexed. (Flowers sdine- 

 what panicled at the summit of the leafy stem.) 



1. G. album, Gmelin. Smoothish or softly pubescent ; stem slender 

 (2 high) ; root-leaves of 3 - 5 leaflets, or simple and rounded, with a few minute 

 leaflets on the petiole below ; those of the stem 3-divided, lobed, or only toothed ; 

 stipules small ; petals white (3" long), obovate or oblong, fully as long as the 

 calyx ; receptacle and ovaries bristly-hairy ; upper joint of the style a little hairy. 

 Borders of woods, common. May -Aug. Near the European G. urbanum. 



2. G. Virginianum, L. Bristly-hairy, especially the stout stem; 

 lower and root-leaves pinnate, very various, the upper mostly 3-parted or 

 divided, incised ; stipules small ; petals greenish-white, shorter than tlie calyx ; re- 

 ceptacle and ovaries glabrous. Woods and low grounds ; common northward. 

 Clearly different from the last. 



3. G. macropliylliiiil, Willd. Bristly-hairy, stout (l-3 high), 

 root-leaves lyratcly and interruptedly pinnate, with the terminal leaflet very large 

 and round-heart-shaped ; lateral leaflets of the stem-leaves 2-4, minute, the ter- 

 minal roundish, 3-cleft, the lobes wedge-form and rounded; petals yellow, obovate, 

 longer titan the calyx ; receptacle of fruit nearly naked; achenia bristly above. 

 Around the base of the White Mountains, New Hampshire : also North Illinois 

 and northward. June. (Eu.) 



4. G. Stricttim, Ait, Somewhat hairy (3 -5 high) ; root-leaves inter 

 ruptcdly pinnate, the leaflets wedge-obovate ; leaflets of the stem-hares 3-5, 

 rhombic-ovate or O!>/U>H/, acute; petals yellow, roundish, longer than the calyx ; recep> 

 taclc downy; achenia bristly abc-e. Moist meadows; common, especially 

 northward. July. (Eu.) 



