260 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



10. MOEHRINGIA. 



Petals longer than the obtusish sepals I. M. lateriflora. 



Petals shorter than the acuminate sepals 2. M. macrophylla. 



1. Moehringia lateriflora (L.) Fenzl, Verbr. Alsin. 18. 1833. 

 Arenaria laierifoUa L. Sp. PI. 1 : 423. 1753. 



Type locauty: Sil)eria. 



Range: On*gon to Colorado and New Jersey, and northward. Asia. 



Specimens examined: Mason County, Piper 1022; liovk h&ko , Sandberg <& Leiherg 123; 

 Spragup, Henderson, May, 1892; Pullman, Hull 483; Piper, June, 1893; Walla Walla, 

 Brandegee&7\. 



Zonal distribution; Transition. 



2. Moehringia macrophylla (Ilook.) Torr. B<it. Wilkes Exped. 246. 1874. 

 Arenaria macrajthylla Ihxik. Fl. Bor. Am. 1: 102. 1830. 



Type locality: "North-West America, in shady woods." Collected by Douglas. 



Ranoe: British Columbia to California and eastward to Lake Sujierior. 



Spe<'imens examined: Clallam County, Elmer 2751; Tacoma, Flett 87; Mount Rai- 

 nier, Piper 2128; upper Nisqually Valley, ^//en 158; White Salmon, 5ui-sA>7/250; Klicki- 

 tat River, Flett 13.56; Clealum, Whited 361 ; Nason Creek, Sandherg cfc Leiherg 627; without 

 locality, Brandegee 670; Kamiak Butte, Moore 1705; Pend Oreille River, Lyall in 1861; 

 Wawawai, Lake cfc Hull 784; Mount Carlton, Kreager 219; Cape Horn, Piper 5014. 



Zonal distribution: Transition to Iludsonian. 



AMMODENIA. 



1. Anunodenia peploides (L.) Rupr. Beitr. Pfl. Russ. Reich. 2: 25. 1845. 



Arenaria peploides L. Sp. PI. 1: 423. 1753. 



Honkenya peploides Ehrfi. Beitr. 2: 181. 1788. 



Type \x>c\iat\: European. 



Ras(je: On the seashore, Arctic regions, southward to Washington and New Jersey. 

 Europe. Asia. 



Specimens examined: Shoalwater Bay, Cooper in 18,54; Bellingham Bay, Suksdorf 

 1867; Ilwaco, Henderson 2156; Fidalgo Island, Lyall in 1858. 



Zonal distribution : Humid Transition. 



la. Anunodenia peploides major (Hook.) 



Arenaria pejioides major Hook. Fl. Bor. Am. 1: 102. 1830. 



Honkenya oblongi folia Torr. & Or. Fl. 1 : 176. 1838. 



Arenaria sitchensis Dietr. Syn. PI. 2: 1565. 1839-.52. 



Type locality: "De Fuca's Straits." Collected by Scouler. 



Range: Alaska to Washington. 



Specimens examined: Oyhut, Lamb 1248; Whidby Island, Gardner 45; near Seattle, 

 Piper, July, 1897. 



Zonal distribution: Humid Transition. 



ABENABIA. 

 Valves of the capsule 2-toothed. 



Annual; leaves ovate 1. A. serpyllifolia. 



Perennials; leaves very narrowly linear. 



Sepals obtuse; flowers in loose cymes 2. A. capillaris. 



Sepals not obtuse. 



Petals longer than the ovate acute 3-nerved sepals. 



Flowers in dense clusters 3. vl. congesta. 



Flowers in loose clusters 4. yl. glabrescens. 



