364 FIELD MUSEUM or NATURAL HISTORY BOTANY, VOL. II 



form, set closely facing each other at the base of the tube. Fruit 



unknown. 



Type locality: MEXICO, Tomellin, collected by the late Dr. Pehr 



Olsson-Se/er, August, 1910. Type in herb. Missouri Botanical 



Garden, St. Louis, sheet No. 13. 465. 

 Distribution: Known only from the type. 



18. PEDILANTHUS INVOLUCRATUS (Kl. & Gke.) Boiss. in D. C. Prodr., 

 15:6. 1862.. 



Diadenaria involucrata Kl. & Gke. Tricocc., 107. 1859. 



Shrubby, 9 dm.-i.2 m. Leaves petiolate (petioles 6 mm. long), 

 glabrous above, deflexed puberulent beneath, oblong, short-apiculate, 

 7.5 cm. long, 4.2 cm. broad. Cymes terminal bi-cephalic; bracts of the 

 inflorescence puberulent, orbicular, apiculate, 2 cm. long, 1.6 mm. 

 broad; involucres small, 10 mm. long; filaments glabrous. 

 Type locality: MEXICO. Type a living plant in the Botanical Garden, 



Berlin, 1859. 

 Distribution : Known only from the type. 



19. PEDILANTHUS RUBESCENS Brandegee, in Zoe, 5:209. 1905. 

 Stems numerous 1-2 m. high, much branched. Leaves nearly 



glabrous, ovate-lanceolate, cuneate at the base into a short petiole, 

 midrib keeled and excurrent at the tip, 9 cm. long, 3.5 cm. broad. 

 Cymes terminal, the floral leaves brick-red; involucres pubescent, 

 cuneate at the base, 2 cm. x 9 mm., the inferior notch extending nearly 

 to the base, the two main lobes oblong-oval, the two lateral narrow, 

 linear, erose at the apex, connate four fifths their length, fifth lobe 

 ligulate, truncate, erose-dentate; male and female pedicels glabrous, 

 filaments glabrous; style nearly i cm. long; capsule smooth, on a stipe 

 i cm. long, 12 mm. broad; seeds somewhat cuboid, apiculate, 5.5 x 4.5 

 mm., strongly 3-angled the dorsal most prominent, reddish-brown, 

 pulverulent (not pubescent). Appendix with two elongated-deltoid 

 lobes thickened and compressed laterally at the bilobate apex, each 

 with a large, phalloid gland at its base. 

 Type locality: MEXICO, Culican, August 30, 1904, T. S. Brandegee. 



Type (visa) in herb. University of California, Berkeley. 

 Distribution: Known only from the type locality where it was also 



collected by Dr. Edward Palmer in 1891 (his number 1767 in herb. 



New York. Botanical Garden). 



20. Pedilanthus Palmeri Millsp. sp. nov. 



Shrubby; stems hollow except at the nodes. Leaves broadly lanceo- 

 late-ovate, acute, narrowed to a cuneate base, glabrous, keeled beneath. 



