104 SANTALACE^. Comandm. 



the summits of the stems : flowers 1|^ to 2 lines long, on slender pedicels, the white 

 oblong erect or slightly spreading lobes about equalling the green tnbe, which is 

 continued conspicuously above the ovary : style slender : fruit dry, globular, 2 or 3 

 lines in diameter ; fruiting pedicels 2 to 3 lines long. 



In the foothills of the Sierra Nevada from Mariposa County northward to Washington Terri- 

 tory' and thence across the continent to the Saskatchewan and the northern Atlantic States. 



2. C. pallida, A. DC. Differing from the last in its narrower more glaucous 

 and acuter leaves, which are linear to narrowly lanceolate (or those npon the main 

 stem oblong), all acute or somewhat cuspidate ; fruit larger, ovoid, 3 to 4 lines long, 

 sessile or on short stout pedicels. — Prodr. xiv. 636 ; Watson, Bot. King Exp. 319. 



From Oregon to Colorado and New Mexico, frecjuent in the mountains of Nevada ( Watson) and 

 collected by Newberry in Northwestern Arizona ; probably to be found in California eastward of 

 the Sierra Nevada. 



Order C. LOIlANTHACE-53. (By Dr. George Engelmann.) 



Evergreens, parasitic on shrubs or trees, dull yellowish-green or brownish, with 

 dichotomous branches and swollen joints, the opposite thick and coriaceous exstip- 

 ulate and entire leaves foliaceous or reduced to mostly connate scales : flowers 

 dioecious (in our genera), of 2 to 5 sepals coherent at base and valvate in aestiva- 

 tion ; anthers as many as the sepals and inserted upon them, 1 - 2-celled and sessile 

 (in our species) ; ovary inferior, 1 -celled, with a solitary erect orthotropous ovule, 

 the style short or none ; fruit a berry with glutinous endocarp ; seed with copious 

 fleshy albumen, enclosing a straight axile embryo with superior radicle. — Flowers 

 in our species small and inconspicuous, greenish. 



A considerable order, of about 15 genera and 300 species, distributed mostly through the trop- 

 ical regions both of the Old and New World, with a few species in the temperate zones of both 

 hemispheres. Oidy two genera are represented in the United States. The fruit contains a pecu- 

 liar viscid and tenacious elastic substance known as Bird-lime. 



1. Phoradendron, Flowers globose, mostly 3-lobed. Anthers 2-celled, opening by 2 pores or 



slits : pollen -grains smooth. Berry globose, pulpy and scmitransparent. Cotyledons 

 foliaceous. Leaves foliaceous or scale-like. 



2. Arceuthobium. Flowers mostly compressed ; the staminate usually 3-parted, the pistillate 



2-tootlied. Anthers a single orbicular cell, opeiung by a circular slit ; pollen spinulose. 

 Beny compressed, fleshy. Cotyledons very short. Leaves scale-like, connate. 



1. PHORADENDRON, Nutt. Mistletoe. 

 Flowers globose, immersed in the rhachis of jointed spikes. Calyx 3- (rarely 2- 

 or 4-) lobed. Anthers sessile on the base of the lobes, 2-celled, the cells opening by 

 a pore or slit : pollen-grains smooth. Stigma sessile, obtuse, entire or more or less 

 2-lobed. Berry globose, pulpy, semitransparent, crowned with the persistent sepals. 

 Embryo with foliaceous cotyledons. — Parasitic on the branches of various kinds of 

 trees : spikes single or in pairs in the axils of opposite leaves, or rarely terminal, the 

 lowest joint sterile, the others (1 to many) bearing solitary or several flowers on each 

 side ; the staminate spikes usually with more numerous and more floriferous joints 

 than the pistillate. Flowering in February or March and maturing its fruit the 

 next winter. — Nutt. PI. Gambel, 185. 



An American genus, of about 80 species, ranging from the southern Atlantic States and Oregon 

 to Brazil and Peru, mostly tropical. Only the following species are found within the limits of the 

 United States. 



