Formation and Succession Herbaria 25 



Sparganium-Potamogeton-limnium 

 The alpine lake formation 



Fades 



490. Sparganium angustifolium Michx. 



491. Potamogeton alpinus Balbis 



491. 1. Sparganium angustifolium ochthocolum 

 Species principales 



492. Utricularia vulgaris L. 



493. Callitriche bifida (L.) Morong 

 493.1. Isoetes lacustris paupercula Engelm. 



Paronychia-Silene-chalicodium 

 The alpine mat formation 



ASPECTUS PRIOR 



Fades 



494. Paronychia pulvinata Gray 



495. Silene acaulis L. 



496. Arenaria sajanensis Willd. 



497. Erigeron pinnatisectus (Gray) A. Nels. 



498. Tetraneuris lanata (Nutt.) Greene 



Species principales 



499. Trifolium dasyphyllum Torr. & Gr. 



500. Carex ebenea Rydb. 



501. Carex petaseta Dewey 



502. Zygadenus elegans Pursh 



503. Polygonum bistortoides Pursh 



504. Pentstemon hallii Gray 



505. Agropyrum scribneri Vasey 



506. Sieversia turbinata nana 



507. Potentilla minutifolia Rydb. 



Species secondariae 



508. Saxifraga austromontana Wiegand 



509. Phacelia lyallii (Gray) Rydb. 



510. Pentstemon hallii nana 



511. Aquilegia saximontana chalicodocolus 



512. Polemonium pulchellum coryphocolum 



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