356 Muhlenbergia, Volume 2 



EquiskTuri TkIv^iaTEIA Klnli, Larcre horsetail. Wet places 

 and moist creek banks, Balcli creek, Fnlton, Lower Albina, etc. 

 April to Jnly. 



LYCOPODIACEAE Michx. Clnb moss Family. . 

 Lycopodium L. Club moss. 

 I.YCOPODIUM ci.AVATUM I/. Running- pine. Moist conif- 

 erous woods and ravine.-', St. Ileleisroad. Raie hert-. June, July 



SELAGINELLACEAE Uuderw. Selaginella Family. 

 Selaginella Beativ. Tree moss. 



Sei,AGINELI,A Douglasii (H. & G.) Spring. Douglas' 

 Selaginella. Moist slopes above Milwaukie; moist rocky slopes, 

 Macleay Park. May to July. 



Selaginella rupestris (L.) Spiing. Rock Selaginella. 

 On rocky cliffs. Elk Rock. July, August. 



ISOETACEAE Horan. OnilKvort Family. 

 ISOETES L. Quillwort. 

 ISOETES NuTTALLll A. Br. 4. Nuttall's quillwort. Open 

 fields along ditches, Gladstone. May to July. 



IsoETES sp. 4. In ponds opposite Oswego. May to July. 



SPEUMATOPHYTA. Seed bearing plants. 

 . CLASS L GYMNOSPERMAE— POLYCOTYLEDONES 

 PINACEAE Lindl. Pine Family. 

 PiNUS [Tonrn.] L. Pine. 

 PiNUS PONDEROSA Benthamiana (Hartw.) Vasey. Foot- 

 hills yellow pine. Common near the car shop.s. April, May. 



PiNUS MuRRAYANA Balfour. Lodgepole pine. Common 

 on sandy slopes near Trouidale. Apiil, Mas'. 



TsUGA (Endl.) Carr. Hemlock. 

 TsuGA heterophylla (Raf.) Sargent. Western hemlock. 

 Common in fir woods, Macleay Paik, Mt. Tabor. April, May. 



PsEUDOTSUGA Carr. Douglas fir. 

 PsEUDOTSUGA MUCRONATA (Raf.) Sudw. Douglas fir. Com- 

 mon in all coniferous woods around Portland. The largest tree 



