CATALOGUE. ^ 283 



the valleys of Nevada and Utah; 4-6,000 feet altitude; July-Septem- 

 ber. (960.) 



AscLEPiAS CKYPTOCEEAS. {Anantherix speciosa, Nutt., in Herb. ; Acerates 

 latifolia, Torr. Frem. Rep. 317.) Glabrous ; stems decumbent, 6-10' long, 

 simple ; leaves 3-4 pairs, rounded ovate, 1^-2' long, on very short petioles ; 

 umbels axillary and terminal, sessile, few-flowered ; corolla-lobes ovate-lance- 

 olate, spreading, greenish-yellow, 5" long ; hoods of the crown 3" long, equal- 

 ing the disk, purple, ovate, abruptly pointed with two short recurved beaks ; 

 horn short, incurved, not at all exserted. — Fruit unknown ; easily mistaken 

 for an Acerates. Found by Nuttall on Ham's Fork of Green River, Utah, 

 and by Frdmont (584) in Southeastern Idaho. West Humboldt Mountains, 

 Nevada, near Humboldt Lake, rare; 5,000 feet altitude; May, in flower. 

 Plate XXVIIl. Fig. 1. Stem; natural size. Fig. 2. Flower. Fig. 3. Hood, 

 divided between the beaks and showing the included horn ; both enlarged 

 two .diameters. Fig. 4. Pollen masses ; enlarged sixteen diameters. (961.) 



AcEEATES DECUMBENS, Decne. DC. Prodr. 8. 522. Stems 1-2° long, 

 numerous, decumbent, sometimes angular ; leaves scattered and subopposite, 

 ovate-lanceolate or more usually narrow-lanceolate, (6' long, |-1' wide,) acute, 

 margins scabrous ; umbels terminal, subglobose ; corolla-lobes ovate, green- 

 ish-yellow ; hoods purple, equaling the lobes and exceeding the disk ; pods 

 smooth, 4' long, 1' in diameter. — From Western Texas and Arkansas to 

 Arizona and Utah. On Stansbury Island and in Jordan Valley ; June- 

 August, (962.) 



OLEACE^. 



Feaxinus anomala, Torr., in Herb. Branchlets and petioles pubescent ; 

 leaves simple, broadly cordate or ovate, abruptly acute or emarginate, 1-lJ' 

 in diameter, longer than the petiole, entire, more or less pubescent beneath ; 

 fruit wing-margined the entire length, 6-10" long, oblong, cuneate at base, 

 and acutish or emarginate above ; calyx less than 1" long, persistent at the 

 base of the fruit; seeds 1-2, 3-4" long.— A small tree, 15° high, first discov- 

 ered by Newberry on Macomb's Expedition in 1859 in Labyrinth Canon on 

 the Colorado River, Utah, and again recently collected by Palmer near St. 

 George on the Rio Virgen in the southwestern portion of the State. The 

 fruit is occasionally triangular, 3-winged, and 3-seeded. 



