170 Vniversitij of Califoniia Puhlicatioits in Botany [Vol. 6 



the scarlet of P. Bridgesii, apparently by the admixture of purple from 

 the other parent. Although not accepted as conclusive proof, the 

 sterility of the pollen tends to confirm our suspicions that this form is 

 of hybrid origin. Both P. Bridgesii and P. Jieterophijllus are found 

 on Palomar IMountain, but whether or not they grow near where the 

 hybrid was found is not known. They are to be expected, however, 

 along the lower edge of the Transition Zone and this is the belt in 

 which the hybrid occurs. Only a few plants were seen. 



This is the second hybrid Pentstemon reported from southern Cali- 

 fornia, the other being P. Parishii Gray, a supposed hybrid between 

 P. ccntranthifolius and P. speciahilis} 



Pentachaeta fragilis T. S. Brandegee, sp. 



nov. 



E basi multicaulis : caulibus ca. 12 cm. altis, prope basim paullo 

 villosi.s, superne glabris : foliis oblongis sessilibus, apice obtusis, basi 

 paululum angustatis, margine ciliatis, usque ad 1 cm. longis, 1.5 mm. 

 latis : capitulis diametro ca. 1 cm. ; involucri squamis glabris, ca. 20, 

 oblongis, apice obtusis vel mucronulatis, margine scariosis erosis, 4-6 

 mm. longis : radii floribus ca. 10, styliferis, ligulis apice obtusis, ca. 

 4 mm. longis: achaeniis oblongis compressis, basi angustatis, interdum 

 hirsutulis : pappi setis 20-24, gracilibiLS barbellatis. basi non dilatatis, 

 achaeniis aequilongis : styli ramis breviter complanatis, appendicibus 

 longe subulatis, hirtis. 



'to^ 



This species is easily separated from the others of the genus by 

 its short oblong leaves. Collected at Havilah, Kern County, California, 

 May 16, 1891, by T. S. Brandegee (Herb. Univ. Calif, no. 88032). type. 

 Collected at Havilah also by Piirpus; at Goodwin, southern San Luis 

 Obispo County, by Jared; and on the easterly slopes of the Greenhorn 

 Range, Kern County, by Hall and Babcock, no. 5067. All of these 

 localities are on the warm lower slopes of the southern Sierra Nevada 

 Mountains except Goodwin, which is in the inner South Coast Ranges. 



(The above description is here inserted at the request of Mr. 

 Brandegee.— PI. M. H.). 



Haplopappus eximius sp. nov. 



Plate 20, figs. 1-15 



E radice paululum lignosa : caulibus herbaceis, erectis, plerumque 

 simplicibus, 2-10 cm. altis, foliosis, dense giandulosis: foliis non sem- 

 pervivis, plerumque spatulatis, interdum oblongis. obtusis, parce denta- 

 tis, g];indulosissimis,.inferioribus in petiolum latum angustatis; laminis 



1 Hall, Univ. Oalif. Publ. Bot., 1, 119 (1902); Davidson, Bull. So. Calif. 

 Acad. Sci., 1, 141 (1902). 



