26 Muhlenbergia, Volume 8 



finger-like appendage of the trunk." These characters are even 

 more pronounced in the larger and more common relative, the 

 large elephant's head, Elephantella groenlandica. 



The photograph was taken on Mt. Rose, Washoe county, 

 Nevada, at an elevation of about loooo feet. The trees in the 

 background are the alpine white pine, Pinus albicaiilis. 



THE MONARDELLAS OF SOUTHERN CALIFORNIA— I 



By L. R. Abrams 



The genus Monardella is peculiar to western North Amer- 

 ica, ranging from eastern Washington southeastward through 

 the Great Basin region to Colorado, and southward along the 

 Pacific slope to Lower California and Cedros Island. It reaches 

 its greatest development in the Transition and Upper Sonoran 

 zones of central and southern California. There are probably 

 thirty or more species, but the group is an extremely plastic 

 one, which makes the definition of specific lines difficult. 



Flowers in rather loose heads: cahx 12 to 28 mm. lono-; corolla tube well ex- 

 serted, much longer than the'coroUa lobes: pollen sacs strongly divaricate, 

 ovate-oblong: perennials. I. M.vcranthae. 



Flowers in dense heads: cal^-x 10 mm. or (usually 8 mm.) less in length: corolla 

 tube scarcely exserted, but little longer tha'i the corolla lobes: pollen sacs 

 not strongly divaricate, short rounded-oblong: annuals or perennials. 



II. PVC.N'ANTHAE. 



I. Macranthap: 



Corolla tube narrowly funnel form: calyx 3 to 4 mm. wide: filaments stoutish; 

 anthers 1.25 mm. long 

 Anthers well e.xserted: corolla scarlet 



Herbage sparsely pubescent or pub.'rulent i. M. macrantha 



Herbage more or less den.sely villous la. M. macrantha Hallii 



Anthers scarcely equaling, or the longer slightly exceeding the corolla lobes: 

 corolla yellowish, the tubt- \ ery slender funnelform 



il). M. maci'anlha loui^ilolja 

 Corolla tube i.arrowly cylindrical, scarcely oxer i mm. u ide i)r less: cilyx 2uun. 

 wide: filamencs decidedly filiform; anthers 0.7 mm. long. 

 Herbage sparsely villous or pubescent with spreading hairs: flowers yel- 

 lowish, tinged with rose; corolla tube i mm. or slighll\ more in width. 

 Corolla tube about 15 mm. long, itslol)es 6 to 7 nun. long: herbage pu- 

 •^escent 2. M. luma 



