Vol. ii Hall. — Botanical Survey of San Jacinto Mountain. 31 



the streams and occasionally also the Common Dogwood ( Corntis 

 puhescens), but there are no shrubs or trees common to a majority 

 of the streams. 



Of the endogenous species a large percentage may be classed 

 as riparian. The moist soil and the deep shade supply the 

 conditions favorable to their growth, and as a result of these 

 conditions they exhibit a more or less strongly developed hydro- 

 philous character: the stems are often short, and the broad, thin 

 leaves are commonly glabrous and sessile. Given in the order of 

 their relative abundance, a few of the endogens are the following: 

 Lilimn Parryi, Hahenaria leucostachys, Veratrum speciostim, 

 Epipactis gigantea, and Smilacina amplexicauUs. 



Growing with the above and scarcely less characteristic of 

 the riparian formation are many annual exogenous plants, the 

 majority of which are quite conspicuous, and of these Aquilegia 

 triincata, CastUleia miniata, EpUohium glaherrinuim , Lotus 

 ohlongifolius, and the different species of Veronica and Thalictrum 

 are the more common and noticeable. 



THE POXD for:mation. 



Of even less importance than the riparian formation is the 

 pond formation which, on account of the scarcity of bodies of 

 quiet water, is almost lacking on the mountain. Hemet Lake is 

 an artificial reservoir about two miles in length by less than a 

 half mile in width, but the plants commonly inhabiting such 

 places have not yet found their way to this body of water, and 

 the onh- other one is a shallow pond about a quarter of a mile in 

 diameter, known as Lake Surprise. This lies near the summit 

 of a ridge at an altitude of 9000 feet and, being withiu the 

 Canadian Zone, is surrounded with groves of Murray Pine. 

 The somewhat stagnant water is much warmer than one would 

 expect to find at this altitude and here Potamogefon CJaytoni, 

 which has not been found elsewhere in California south of the 

 Yosemite, although it is common in the Atlantic states, grows 

 in abundance, the surface of the water being nearly covered with 

 its leaves in some places. Eleocharis palustris is also plentiful in 

 the shallower portions, while along the edges LimoseUa aquatica 

 is common both in the water and in the damp sand just above 

 the water line. 



