39^ Mnhlenberg^ia, Volume 2 



RESEDACEAE S. F. Gray. Mignonette Family. 

 Reskda [Tonrn.] L. Mignonette. 

 X Rrseda lutkOLA L. I. Dyer's weed. Ballast grounds 

 and waste places, Lower Albina. Advenlive from Europe. May 

 to July. Greenish-yellow. 



X Rkskda i.utea L. 2. Yellow Mignonette. Ballast 

 grounds and waste place.>, Lower Albina. Adventive from Eu- 

 rope. May to July. Pale jellow. 



CRASSULACEAE DC. Stonecrop Family. 

 Tillaea [Miclieli.] L. Pigniy weed. 

 Tillaea AQUATICA L. I. M ud-bank pigmy weed. {T. an- 

 gustifolia.) Moist ground, Sauvie's island. June to September. 

 Greenish-white, minute. 



Sedum [Tourn.] L. Stonecrop. 

 Sedum spathulifouum Hook. 4. Mealy stonecrop. Oil 

 moi.st rocks, Elk Rock. May to July. Yellow. 



Sedum Douglasii Hook. 4. Douglas' stonecrop. Rocky 

 ridges near Oswego and Rocky Point. May to July. Yellow. 



Sedum UNIFLORUM Howell. 4. One-flowered stonecrop. On 

 rocks, north end of Elk Rock. May to July. Yellow. 

 GORMANIA Britton. Stonecrop. 

 GORMANTA OREGANA (Nutt.) Britton. 4. Oregon stonecrop. 

 {Sedinu oregajtmu.) On rocky places. Rocky Butte. May to 

 July. Yellow. 



SAXIFRAGACEAE Dumort. Saxifrage Family. 

 Saxifraga [Tourn.] L- Saxifrage. 



Saxifraga Mertensiana Bong. 4. Mertens' Saxifrage. 

 On wet rocks, Elk Reck. April to June. White. 



Saxifraga integrifoija Hook. 4. ICn tire-leaved Saxi- 

 frage. Wet places, Oiwego, etc. April to June. White. 



Saxifraga occidentalis Wats. i. Thick leaved Saxi- 

 frage. On rocky cliffs, Elk Rock. April to June.. White. 



Saxifraga NuTTALUI (Nutt.) Small, i. Nuttall's Saxi- 

 frage. On wet rock.s, Elk Rock, Oregon City, etc. April to June, 

 White. 



