522 KOSACEAE 



augmented by 5 bractlets. Petals 5, surpassing the sepals. Stamens numerous, in several 

 series on the throat of the receptacle : filaments distinct, rigid. Pistils 2-6, on a short 

 pubescent receptacle : style nearly terminal, filiform, glabrous. Ovule 1 in each cavity, 

 ascending. Achenes 2-6, oblique, dry or somewhat fleshy. BARREN STRAWBERRY. 



Leaf-blades 3-lobed. 1. W. lobata. 

 Leaf-blades 3-foliolate. 



Petals as long as the sepals or shorter: 2. W. parviflora. 



Petals twice as long as the sepals or longer. 3. W. fragarioides. 



1. Waldsteinia lobata (Baldw.) T. & G. Foliage slightly bristly with delicate 

 spreading hairs. Leaves 1-2 dm. tall ; petioles longer than the blades, slender ; blades 

 suborbicular in outline, 2.5-6 cm. in diameter, cordate, 3-lobed, the lobes crenate with 

 mucronulate teeth : scapes filiform, about as long as the leaves, simple or corymbosely 

 branched above : sepals triangular-lanceolate, acute, somewhat longer than the hypan- 

 thium : petals narrowly oblong or narrowly elliptic, as long as the sepals or shorter : 

 achenes usually 2, densely pubescent. 



On the banks of the Flint and the Chattahoochee Rivers, southwestern Georgia. Spring. 



2. Waldsteinia parviflora Small. Foliage glabrous or villous-hirsute. Leaves 1-3 

 dm. tall ; petioles much longer than the blades, usually less pubescent than the scapes ; 

 blades compound : leaflets 3, the blades cuneate, obovate or broadly rhomboidal, 2-8 cm. 

 long, coarsely and irregularly crenate or lobed : scapes solitary or several together, com- 

 monly shorter than the leaves, more or less extensively corymbosely branched : sepals tri- 

 angular-lanceolate or lanceolate-acuminate, often shorter than the hypanthium : petals 

 linear-oblong or narrowly elliptic, as long as the sepals or slightly shorter. 



In woods or shaded places, Pennsylvania to North Carolina, Tennessee and Georgia. Spring. 



3. Waldsteinia fragarioides ( Michx. ) Tratt. Foliage glabrous or with few spread- 

 ing hairs. Leaves basal, 0.5-3 dm. tall ; petioles as long as the blades or longer ; blades 

 compound : leaflets 3, the blades 2-4 cm. long, broadly cuneate or obovate, or sometimes 

 suborbicular in outline, crenate, crenate-lobed or incised : scapes solitary or tufted, shorter 

 than or mostly longer than the leaves, simple or corymbosely branched above : bracts 

 lanceolate to ovate : sepals ovate to ovate-triangular, longer than the hypanthium, acute or 

 acutish : petals bright yellow, ovate or oval, 8-10 mm. long, twice as long as the sepals or 

 longer. 



In woods or on shaded banks, Ontario (?) to New York, New Jersey, Virginia and Georgia. Spring. 



13. GEUM L. 



Perennial herbs, with horizontal rootstocks and upright stems. Leaves alternate, 

 sometimes all basal : blades 3-foliolate or pinnately divided, the divisions alternate, the 

 terminal one larger than the rest. Flowers of various colors, solitary or in corymbs 

 or cymes. Hypanthium turbinate to hemispheric. Sepals 5, valvate or imbricated, usually 

 augmented by as many bractlets. Petals 5, longer than the sepals. Stamens numerous, in 

 several series : filaments distinct. Pistils numerous, inserted on a short or elongated recep- 

 tacle : style filiform, jointed, more or less angled : stigma minute. Ovule 1 in each cavity, 

 ascending. Achenes dry, sessile or short-stalked. A YENS. 



Heads of achenes sessile : sepals accompanied by bractlets. 



Corolla yellow or cream-yellow. 1. G. flavum. 



Corolla white. 



Plant glabrate or softly pilose : receptacle glabrous. 2. G. Canadense. 



Plant hirsute : receptacle bristly. 



Petals shorter than the sepals : achene-body 2.5-3 mm. long. 3. G. Virginianum. 



Petals as long as the sepals or longer : achene-body 3.5-4.5 mm. long. 4. G. geniculatum. 



Heads of achenes stalked : sepals not accompanied by bractlets. 5. G. vernum. 



1. Geum flavum (Porter) Bicknell. Foliage dingy green. Stems 3-12 dm. tall, 

 hirsute below, corymbosely branched above : leaf-blades variable, those of the basal and 

 lower stem-leaves usually pinnately divided (rarely only lobed), the divisions toothed or 

 incised, the terminal one much larger than the rest ; upper stem-leaves with less divided 

 and shorter-petioled blades : sepals lanceolate, entire, reflexed : petals yellow or cream- 

 yellow, oblong or oblong-cuneate, 3-4 cm. long, usually shorter than the sepals : achene- 

 body about 3 mm. long, with a few bristles especially above the middle. 



In woods and on banks, New York to North Carolina. Spring and summer. 



2. Geum Canadense Jacq. Foliage bright green. Stems 3-9 dm. tall, finely 

 pubescent or glabrate, corymbosely branched above : leaf -blades variable ; those of the basal 

 leaves lobed, 3-divided or pinnate, the divisions toothed, lobed or incised ; stern-leaves 

 similar, but the upper with less divided and with shorter petioled blades : hypanthium 



