LORANTHE.E. 341 



% — 1 ft. long, very uumeroiis (forming a rounded rather dense mass), 

 terete (the ultimate twigs quadrangular), glabrous: scales broadly tri- 

 angular, obtusish, connate or distinct, ciliate: staminate spikes of a 

 single 6— 8-fiowered joint (rarely 2): anthers transverse, opening by 

 pores: pistillate spikes 2-flowered: berry globose, \^.{ lines thick, whitish 

 or light red. Var. Libocedri, Engelm. Bot. Calif, ii. 105. Branches 

 longer and more slender, the ultimate twigs more sharply quadrangular. 

 — From Yuba Co. southward; the type on junipers, the variety on cedar. 



2. KAZOUMOFSKYA, Hoffmann. Small yellow or greenish leafless 

 parasites upon coniferous trees: leaves represented by connate scales. 

 Flowers axillary and terminal, solitary or several from the same axil. 

 Staminate fl. mostly 3-parted, compressed, or the terminal ones globose : 

 anthers sessile on the lobes, orbicular and 1-celled, dehiscent by a circular 

 aperture at base; pollen-grains spinulose. Pistillate fl. ovate, com- 

 pressed, 2-toothed, subsessile, the pedicel in fruit elongated and recurved. 

 Fruit compressed, elastically dehiscent at the circumscissile base, forcibly 

 ejecting the seed. Cotyledons rudimentary, indicateel by a notch in the 

 axis of the embryo. 



* Staininale Ji. on peduncle-like joints, all or nearly all terminal. 



1. R. Americana, O. Ktze. Kev. Gen. ii. 587 (1891); Nutt. in PL 

 Lindh. ii. 214 (1850), under Arceuthobium. Slender, dichotomously or 

 verticillately branching, greenish-yellow; staminate plants often 3 — 4 in. 

 long; fertile much smaller: staminate fl. 1 line broad or more, with 

 round-ovate acutish lobes; the pistillate % — 1 line long: fr. 2 lines 

 long. — Parasitic on Finns contorta; flowering in autumn, fruit maturing 

 a year later. 



* * Staminate Ji. sessile, mostly axillary. 



2. R. Doaglasii, O. Ktze. 1. c; Engelm. in Wheeler's Rep. 253 (1878), 

 under Arceuthobium. Slender, greenish yellow, I4 — 1 in. high, miich 

 branched, but not verticillately, the accessory branchlets behind (not 

 beside) the primary ones: spikes short, mostly 5-flowered: staminate fl. 

 less than a line wide, with round-ovate acutish lobes : f r. 2% lines long, 

 Var. abietiiiuiii (Engelm. Bot. Calif., under Arceuthobium). Fertile 

 plant larger (1 — 3 in. high), the sterile smaller, with spreading or even 

 recurved branchlets: fr. smaller (scarcely 2 lines long).- -The type on 

 Pseudotsuga taxifolia, east of the Sierra southward, not for a certainty 

 within our limits; the variety, or probably distinct species, on Abies con- 

 color farther northward, in Sierra Co., Lernmon. 



3. R. occidentalis, O. Ktze. 1. c; Engelm. Bot. Calif, ii. 107 (1880), 

 under Arceuthobium. Stoiit, 2 — 5 in. high, paniculately much branched: 

 sterile plants brownish-yellow, smaller; fertile commonly darker, olive- 

 brown : staminate fl. in long dense spikes, often 9 — 17 on a single axis. 



