12 AMERICAN MIDLAND NATTRLAIST 



above their attachment; leaves not unusually becoming 12 cm. 

 long and 7 cm. wide, 3-nerved at base, with the lateral nerves 

 ending in the ist or 2nd tooth, sometimes even in the 3rd and 

 4th from above; leaf-margins with 8-16 teeth; petioles very 

 slender, in the middle of the stem longer and toward the apex 

 shorter than the laminae; flower clusters 8 on the stem, 4 on the 

 branches, spreading on long and slender pedicels. Achenes 1.5 

 mm. long, i mm. wide, more or less narrowly ovoid, only slightly 

 acutish and slightly compressed, colored light green and beautifully 

 sprinkled with dark green dots, which are either distinctly separate 

 or closer together, then looking reticulated or like rosaries. This 

 being our largest species, its name suggests a plant of dwarfy 

 dimentions and is a misnomer, indicating that Linnaeus made his 

 description from an immature or poorly nourished specimen. 



Leeds, North Dakota. 



New Plants from North Dakota. -X. 



BY J. LUNELIv. 



Ranunculus V/aldronii sp. nov. 



Caules, pedunculi, petioli, margines foliorum, sepala sparsim 

 pilosi, denique glabrati. Caules i — complures, 7-12 cm. alti, 

 de fasciculo radicularum carnosarum perennium oriundi, floribus 

 paucis — compluribus ornati. Folia radicalia 2-5, anguste — late 

 elliptica usque ovalia, basi cuneata, apice acutulo, sive integra 

 sive apice 2 vel 3 lobis brevibus exornata, petiolo laminae aequali 

 vel duplo longiore. Folia caulina aut integra, anguste elliptica, 

 aut profunde usque basin paene fissa, lobo mediano amplo, latiore 

 (sive integro sive apice 2 vel 3 lobis brevibus exornati), laterali- 

 bus vel omnibus lobis linearibus. Petala parva, anguste obovata, 

 5-8 mm. longa, 3-5 mm. lata, sepala cxcedentia. Capitula car- 

 pellorum sphaerica. Achaenia turgida, glabra, dorso rotufidato, 

 rostro brevi adunco provisa. 



Stems, peduncles, petioles, leaf-margins and sepals sparingly 

 hairy, at length glabrate. Stems 1 -several, 7-12 cm. high, from 

 a fascicle of numerous, fleshy, flbrous, perennial roots, few -several 

 flowered. Radical leaves 2-5, narrowly-broadly elliptical to 



