264 PRIMULACEAE. 



6. GLAUX L. SEA MILKWORT, BLACK SALTWORT. 



i. Glaux maritima L. On beaches and in salt marshes from Newf. and 

 Alaska to N. J., Colo, and Ore. Alt. about 5000 ft. New Windsor, Weld 

 Co. ; Ft. Collins ; Cache la Poudre. 



Order 41. OLEALES. . 



Family 106. OLE ACE AE Lindl. OLIVE FAMILY. 



Fruit a samara. i. FRAXINUS. 



Fruit a drupe. 2. ADELIA. 



i. FRAXINUS L. ASH. 



i. Fraxinus anomala Torn In canons from western Colo, and Utah to 

 Ariz. Alt. 4500-5000 ft. Grand Junction; Deer River; between Hotchkiss 

 and Smith's Fork. 



2. ADELIA P. Br. 



i. Adelia neo-mexicana (A. Gray) Kuntze. (Forestiera neo-mexicana A. 

 Gray; F. acuminata parvifolia A. Gray) On hills from Colo, to Tex. and N. 

 M. San Juan (Brandegee). 



Order 42. GENTIANALES. 



Corolla-lobes convolute or imbricated in the bud ; leaves typically opposite and 

 simple. 107. GENTIAN ACEAE. 



Corolla-lobes induplicate-valvate in the bud ; leaves alternate, in ours mostly 

 basal and trifoliolate. 108. MENYANTH ACEAE. 



Family 107. GENTIAN ACEAE Dumont. GENTIAN FAMILY. 



Style filiform, mostly deciduous ; anthers recurving or twisted at maturity. 



Corolla small, red, rose or yellowish ; tube surpassing the calyx ; filaments 



spirally twisted. i. ERYTHRAEA. 



Corolla large, blue, purple or white ; tube much shorter than the calyx ; 



stamens recurved. 2. EUSTOMA. 



Style stout and short or none, persistent. 



Corolla without nectariferous pits, glands or scales. 



Corolla campanulate, funnelform or salvershaped ; calyx 4-5-lobed ; stamens 



inserted in the corolla-tube. 

 Corolla without plaits or lobes at the sinuses ; calyx without an intercalycine 



membrane ; sepals imbricated. 



Flowers 4-merous, rather large, usually over 3 cm. long ; corolla-lobes 

 more or less fringed or toothed ; inner sepals broader, membraneous- 

 margined. 3. ANTHOPOGON. 

 Flowers small, s-merous (seldom 4-merous), less than 2 cm. long; 

 outer sepals the broader ; corolla-lobes never fringed, rarely toothed. 



4. AMARELLA. 



Corolla plicate in the sinuses ; the plaits more or less extended into mem- 

 braneous lobes or teeth ; calyx with an intercalycine membrane ; its 

 lobes valvate. 



Dwarf annuals or biennials ; flowers solitary, terminal ; anthers cordate- 

 versatile. 5. CHONDROPHYLLA. 

 Perennials ; flowers short-peduncled, at least some of them axillary ; 



anthers linear or oblong, extrorse. 6. DASYSTEPHANA. 



Corolla rotate ; calyx 4~s-parted to near the base ; stamens inserted on the 

 base of the corolla. 7. PLEUROGYNE. 



