858 MISC. PUBLICATION 42 3, U. S. DEPT. OF AGRICULTURE 



1. Lonicera involucrata (Richards.) Spreng., Syst. Veg. 1: 759. 1825. 



Xylosteum involucratum Richards., Bot. App. Frankl. Journey 

 733. 1823. 



Apache, Coconino, Greenlee, Graham, and Cochise Counties, 

 especially on the White Mountains, San Francisco Peaks, Pinaleno 

 Mountains, and Chiricahua Mountains, 7,500 to 10,500 feet, open 

 coniferous forests, often along streams, June and July. Canada and 

 Alaska to Michigan, Arizona, California, and northern Mexico. 



Bearberry honeysuckle, inkberry, pigeonbush, twinberry. Suckers 

 freely and tends to form thickets. The flowers attract hummingbirds # 



2. Lonicera utahensis S. Wats, in King, Geol. Expl. 40th Par. 5: 133. 



1871. 



Xylosteon utahense Howell, Fl. Northwest. Amer. 282. 1900. 



White Mountains (Apache and Greenlee Counties), 9,500 to 11,000 

 feet, open coniferous forests, gregarious, July. Montana to British 

 Columbia, south to New Mexico, Arizona, and northern California. 



3. Lonicera arizonica Rehder, Trees and Shrubs 1: 45. 1902. 

 Apache County and Coconino County (both sides of the Grand 



Canyon), to Cochise and Pima Counties, 6,000 to 9,000 feet, open 

 coniferous forests, June and July, type from the Rincon Mountains, 

 Pima County (Pringle in 1884). Utah, New Mexico, and Arizona. 

 Arizona honeysuckle. Closely related to L. ciliosa Poir., and some 

 of the Arizona specimens (e. g. Rusby in 1883) appear to be inter- 

 mediate. 



4. Lonicera interrupta Benth., PL Hartw. 313. 1839. 



Gila and Pima Counties, in the Pinal, Sierra Ancha, and Santa 

 Catalina Mountains, 4,000 to 6,000 feet, chaparral, usually near 

 streams, May and June. South-central Arizona and California. 



Chaparral honeysuckle. 



5. Lonicera albiflora Torr. and Gray, Fl. North Amer. 2: 6. 1841. 

 Southern Apache County and Gila County to Cochise and Santa 



Cruz Counties, 3,500 to 6,000 feet, along streams, April to June. 

 Arkansas to southern Arizona and northern Mexico. 



The species is represented in Arizona by var. dumosa (A. Gray) 

 Rehder (L. dumosa A. Gray). 



118. VALERIANACEAE. Valerian family 



Plants herbaceous, annual or perennial; leaves opposite, without 

 stipules; flowers perfect or unisexual, somewhat irregular, in cymose 

 panicles; calyx with the tube wholly adnate to the ovary and with the 

 limb represented by pappuslike bristles, or obsolete; corolla salver- 

 form; stamens commonly 3, borne on the corolla; ovary 3-celled, with 

 2 of the cells empty; fruit achenelike, 1 -seeded. 



Key to the genera 



1. Limb of the calyx obsolete; corolla with a long pendent spur at base of the 

 throat 1. Plectritis. 



1. Limb of the calyx represented by a circle of setiform lobes, these at maturity 

 elongating and becoming a pappuslike ring of plumose bristles surmounting 

 the fruit; corolla not spurred, the tube sometimes gibbous or slightly 

 saccate 2. Valeriana. 



