364 



ovary, the segments triangular or triangular-ovate, obtuse, 3- 

 nerved, longer than the tube ; petals obovate, obtuse or notched at 

 the apex, 2.5 mm. long, strongly 3-nerved, the lateral nerves aris- 

 ing below the middle and converging toward the apex; filaments 

 subulate, shorter than the petals; carpels of the ovary flat and 

 surrounded by a disk; follicles globose-ovoid, 3.5 mm. long, dis- 

 tinct, tipped by short diverging styles ; seeds obovoid, more or 

 less pointed at both ends. 



Wet rocks near the Columbia river, W. Klickitat County, 

 Washington. Collected by W. N. Suksdorf. (no. 1727.) 



The specimens on which this species is founded were collected 

 in March and May, 1892, and distributed later with the manuscript 

 name which I have taken up. It was collected also in Oregon, 

 by Mr. Thomas Howell in May, 1895, " on wet slopes, Gladstone" 

 (no. 192). 



The species is related to Saxifvaga Califoniica, but differs in its 

 more rigid habit, rough and stiff pubescence, the narrow thyrsoid 

 panicle or corymb and the triangular or triangular-ovate calyx-seg- 

 ments. 



Saxifraga Tennesseensis n. sp. 



Saxifraga Grayana Kearney, Bull. Torr. Club, 21 : 262. 1894. 

 Not Britton, 1894. 



Perennial by a short erect or ascending rootstock, scapose, 

 glandular-pilose, bright green. Leaves basal, ovate or sometimes 

 suborbicular, the blade 2-6 cm. long, obtuse or rounded at the 

 apex, but usually terminated by a tooth, coarsely crenate-dentate, 

 abruptly narrowed at the base, the petiole winged, longer or 

 shorter than the blade; scapes erect or assurgent, 1-2.5 dm. tall; 

 branches of the panicle subtended by linear or spatulate bracts ; 

 cymules open ; flowers white, 8-9 mm. broad ; calyx flattish, 

 5 mm. broad, its tube adherent to the ovary, its segments triangu- 

 lar-ovate, 1-1.5 mm. long, acute, spreading, longer than the tube; 

 petals lanceolate, 3.5-4 mm. long, obtuse or slightly notched at 

 the apex, sessile or nearly so, with two lateral nerves which arise 

 below the middle and converge at the apex, the lateral nerves 

 often giving off short secondary branches ; filaments subulate, 

 somewhat longer than the calyx-segments, mature fruit not seen. 



Rocky bluffs of the Tennessee River about Knoxville. Alti- 

 tude about 270 meters. 



Saxifraga Tennesseensis was apparently first collected by Prof. 

 A. Ruth, of Knoxville, Tennessee, but first brought to notice by 



