264 PRIMULACEAE. 



6. GLAUX L. Sea Milkwort, Black Saltwort. 

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

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

 Co. ; Ft. Collins ; Cache la Poudre. 



Order 41. OLEALES. 

 Family 106. OLEACEAE Lindl. Olive Family. 



Fruit a samara. i. Feaxinus. 



Fruit a drupe. ^. Adelia. 



1. FRAXINUS L. Ash. 



I. Fraxinus anomala Torr. 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. 



1. 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. Gentianaceae. 



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

 basal and trifoliolate. io8. Menyanthaceae. 



Family 107. GENTIANACEAE 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. 



