246 



ELAEAGNACEAE. 



HIPPOPHAE. Sea Buckthorn. 

 (Family Elaeagnaceae). 



Shrubs, commonly with termi- 

 nal and axillary twig-spines, stel- 

 lately pubescent and with silvery 

 or browning small peltate scales: 

 deciduous. Twigs very slender, 

 subterete: pith small, brown, 

 round, continuous. Buds minute, 

 solitary or collaterally branched 

 in spine formation, sessile, round, 

 or heart-shaped from the parting 

 of the 2 scales, the end-bud lack- 

 ing. Leaf-scars alternate, half- 

 round or transversely elliptical, 

 minute, low: bundle-trace 1: 

 stipule-scars lacking. 



Winter-character references to. 

 Hippophde rhamnoides: Bose- 

 mann, 49; Fant, 31, f. 33; Schnei- 

 der, f. 132; Ward, 1: 118, f. 59, 

 191, f. 95; Willkomm, 4, 30, f. 37; 

 Zuccarini, 30, pi. 16. 



Hippophde is tender and much less frequently seen in 

 America than Elaeagnus, from which it scarcely differs in 

 vegetative characters except in having none of its shoots end- 

 ing in a developed bud, and in its more delicate twigs. 

 Twigs for a time silvery: buds brown-scurfy. H. rhamnoides. 



