218 



ROSACEAE. 



[VOL. II. 



12. WALDSTEINIA Willd. NeueSchr. Gesell. Nat. Fr. 2: 105. pi. 4. 1799. 



Perennial herbs with the aspect of Strawberries, with alternate mainly basal long-petioled 

 3-5-foliolate or lobed leaves, membranous stipules, and yellow corymbose flowers on bracted 

 scapes. Calyx persistent, the tube top-shaped, minutely 5-bracteolate or bractless at the 

 summit, 5-lobed. Petals 5, obovate, longer than the calyx-lobes. Stamens oo , inserted on the 

 throat of the calyx; filaments rigid, persistent. Carpels 2-6, inserted on a short villous recep- 

 tacle; style nearly terminal, deciduous, filiform. Achenes 2-6, obliquely obovoid, pubescent. 

 Seed erect. [Named in honor of Franz Adam von Waldstein-Wartenburg, 1759-1823, a Ger- 

 man botanist.] 



Four known species, natives of the north temperate zone. Besides the following, another occurs 

 in the southern Alleghanies. 



i. Waldsteinia fragarioides (Michx.) Tratt. Barren or Dry Strawberry. 



(Fig. 1939.) 



Italibarda fragarioides Michx. Fl. 



Bor. Am. i: 300. pi. 28. 1803. 

 Comaropsis fragarioides Nestl. Mon. 



Pot. 8. pi. i. 1816. 

 H'aldsleinia fragarioides Tratt. Ros. 



Mon. 3: 107. 1823. 



Pubescent, or nearly glabrous, 

 rootstock creeping, rather stout. 

 Stipules ovate-lanceolate, acutish; 

 leaves tufted, long-petioled, 3-foli- 

 olate (rarely 5-foliolate); leaflets ob- 

 ovatc, obtuse at the apex, broadly 

 cuncate at the base, dentate or cre- 

 nate and sometimes incised, I'-a' 

 long; scapes slender, erect, bracted, 

 corymbosely 3-8- flowered; pedicels 

 slender, often drooping; flowers 

 yellow, 3 // -5 // broad; achenes 

 4-6, finely pubescent; calyx-lobes 

 ovate-lanceolate, acute. 



Woods and shaded hillsides, north- 

 ern New England and Ontario to 



Minnesota. Mic-lii^m, Indiana and 

 along the Alleghanies to Georgia. 

 May-June. 



13. GEUM L. Sp. PI. 500. 1753. 



Perennial herbs, with odd-pinnate or deeply pinuatifid, stipulate leaves, those of the 

 base clustered, those of the stem commonly smaller. Flowers cymose-corymbose or solitary, 

 yellow, white or purple. Calyx persistent, its tube obconic or hemispheric, usually 5-bracteo- 

 late, 5-lobed. Petals 5, orbicular, oblong or obovate, obtuse or emarginate, exceeding the 

 calyx. Stamens oo, inserted on a disk at the base of the calyx; filaments filiform. 

 Carpels oo , aggregated on a short receptacle. Style filiform, straight or jointed, persistent, 

 sometimes plumose in fruit. Seed erect, its testa membranous. [The ancient Latin name.] 



About 40 species, most abundant in the north temperate zone, a few in southern South America, 

 i in South Africa. Besides the following, about 5 others occur in western North America. 



Calyx-lobes erect or spreading. 



Leaflets 1-9, dentate or lobed, unequal in size; style plumose below, short. 



Flowers purple, nodding. i. G. rivals. 



Flowers yellow, erect. 2. G. radiatnm. 



Leaflets very numerous, incised; flowers light purple; style plumose throughput, elongated. 



3. G. ciliatum. 

 Calyx-lobes strongly reflexed. 



Flowers yellow, 2" broad; head of fruit stalked; calyx bractless. 4. G. vernum. 



Flowers white, or yellow, 4"-io" broad; head of fruit sessile; calyx bracteolate. 

 Flowers white, or very nearly so, 4"-8" broad; stipules small. 



Plant softly-pubescent or glabrate ; receptacle bristly. 5. G. Canadense. 



Plant rough-pubescent; receptacle nearly glabrous. 6. G. Virginianum. 



Flowers cream-yellow, 3" broad, stipules large. 7. G. flavum. 



Flowers yellow, 5"-io broad; stipules large, dentate. 



Plant bristly; terminal leaflet very large, cordate. 8. G. macrophyllum. 



Plant pubescent; terminal leaflet ovate or cuneate. . 9. G. slrictum. 



