358 University of California Pithlications in Botany [Vol. 6 



Aristolochia (Gymnolobus) sinaloae sp. nov. 



Prostrata puberiila : caulibus tenuibus ca. 7 dm. longis : foliis sagit- 

 tatis ca. 7 cm. longis, 2.5 cm. latis ; petiolis ca. 1 cm. longis : fioribns 

 solitariis axillaribus; pecUmculo ca. 1.2 cm. longo bracteam sagittatam 

 gerenti ; utriculo ovoideo ca. 8 mm. longo ; tubo paulum curvato ca. 

 5 mm. longo intus processii breviter infiindibuliformi praedito; labio 

 unilabiato, labio basi breviter peripbico, ovato-lanceolato ca. 2 cm. 

 longo : columna stylina apice 5-lobato, lobis acuminatis ; antlieris 5. 

 Fructus deest. 



A prostrate delicate plant collected by T. S. Brandegee. November 

 5, 1904, on a grass-covered slope of Cerro Colorado near Culiacan, 

 Sinaloa, Mexico. The basal lobes of the leaves are slightly obtuse. 

 Type, Herb. Univ. Calif. No. 116580. 



Sedum pinetorum sp. nov. 



Glabrum caespitosum multicaule, e radicibus tubera gerentibus : 

 caulibus brevibus, ca. 4 mm. altis, simplieibus apice unifloris : foliis 

 dense imbricatis oppositis ovato-acutis vel obtusis sessilibus, costa 

 valida, 2-3 mm. longis : pedunculo ca. 5 mm. longo, interdum bracteis 

 , parvis alternantibus praedito ; fioribus albis ; calyce in lobos 5 late 



ovatis 2-3 mm. longis latisque fere ad basim sectis ; petalis 5 ca. 3.5 

 mm. longis, ovato-lanceolatis prope basim connatis ; staminibus 10, 

 corollae affixis ; folliculis liberis oligospermis ; seminibus rubris. 



A minute plant growing in dense clumps resembling superficially 

 the cespitose depressed species of Phlox. Collected at deserted Pine 

 City above Mammoth, Mono County, California, by K. Brandegee, 

 July, 1913. Type, Herb. Univ. Calif. No. 185499. 



Asclepias chapalensis sp. nov. 



Erecta plus quam 3 dm. alta : caulibus pubescentibus crassis : foliis 

 oblongis apice basique obtusis, ca. 2 dm. longis, 1 dm. latis, supra 

 paululum hirsutis, subtus pubescentibus transverse et reticulatim 

 venosis ; petiolis ca. 1 cm. longis : umbellis multifloris, ca. 4, caules 

 terrainantibus, pedunculis usque ad 7 cm. longis dense tomentosis, 

 pedicellis tomentosis ca. 6 mm. longis ; calyeis segmentis lanceolatis 

 hirsutulis ; corollae lobis late ovatis ; columna brevissima, cucullis 

 erectis superne acuminatis, complicatis, antheras superantibus, infra 

 medium marginibus denticulatis, dorso crassis, processu interiori ob- 

 longo apice eraarginato, membranaceo brevi. Fructus deest. 



The interior appendage is an oblong membranous process arising 

 from near the base of the hood and much shorter than it. Collected 

 near Lake Chapala, Mexico, by J. G. Lemmon, 1905. Type, Herb. 

 Univ. Calif. No. 105308. 



