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



forests, June and July. Throughout the cooler parts of North Amer- 

 ica; Eurasia. 



The Arizona form is var. microbotrys (Rydb.) Kearney and Peebles 

 (S. microbotrys Rydb., S. acuminata Greene), with the leaves and 

 branchlets glabrous or nearly so. The herbage is strong-scented, and 

 the fruits are reputed to be poisonous. The type of S. acuminata 

 came from Mount Agassiz (Pearson 330). 



2. Sambucus melanocarpa A. Gray, Amer. Acad. Arts and Sci. Proc. 



19: 76. 1883. 

 White Mountains (Apache County), Santa Catalina Mountains 

 (Pima County), reported also from the Kaibab Plateau (Coconino 

 County), 7,500 feet and probably higher, May to July. Alberta and 

 British Columbia to New Mexico, Arizona, and California. 



3. Sambucus neomexicana Wooton, Torrey Bot. Club Bui. 25: 309. 



1898. 



Coconino County to Cochise and Pima Counties, 5,500 to 9,500 feet, 

 mostly along streams, July and August. New Mexico and Arizona. 



This shrub attains a height of 2.5 m. (8 feet) and has been reported 

 to reach 6.5 m. (21 feet). Both the typical form, with the branchlets 

 and leaves glabrous or nearly so, and var. vestita (Woot. and Standi.) 

 Kearney and Peebles (S. vestita Woot. and Standi.), with the branch- 

 lets and leaves persistently puberulent or tomentulose, are found in 

 Arizona. The variety has been collected in the Pinal, Santa Catalina, 

 and Santa Rita Mountains. 



4. Sambucus velutina Dur. and Hilg., U. S. Rpt. Expl. Miss. Pacif. 5: 



8. 1855. 

 Hualpai Mountain, Mohave County (Goldman 2980, Kearney and 

 Peebles 12725), 7,000 to 8,000 feet, yellow pine forest. Western 

 Arizona and California. 



5. Sambucus mexicana Presl in DC, Prodr. 4: 322. 1830. 



Sambucus coerulea Raf. var. arizonica Sarg., Man. Trees North 

 Amer. ed. 2, 885. 1922. 



Gila, Yavapai, and Mohave Counties to Cochise, Santa Cruz, and 

 Pima Counties, 1,200 to 4,000 feet, frequent along streams and ditches, 

 April to June. Southern New Mexico to southern California and 

 northern Mexico. 



Mexican elder (pi. 29). The tree attains a height of 9 m. (30 feet) 

 and a trunk diameter of 45 cm. (18 inches) . It is the only nonmontane 

 species in the State. 



6. Sambucus coerulea Raf., Alsogr. Amer. 48. 1838. 



Both sides of the Grand Canyon (Coconino County) , near Prescott 

 (Yavapai County), Chiricahua Mountains (Cochise County), 6,500 

 to 8,000 feet, coniferous forests, June to August. Alberta and British 

 Columbia to Arizona and southern California. 



Usually a many -stemmed shrub, up to 6 m. (20 feet) high, sprouting 

 freely from the root. 



