844 MISC. PUBLICATION 4 2 3, U. S. DEPT. OF AGRICULTURE 



9. Leaves somewhat rigid, turning dark in drying; spikes at maturity 

 commonly 3 to 6 cm. long and more than 4 times as long as wide; 

 lowest bracts unlike the sepals, broadly lanceolate to broadly del- 

 toid, not scarious-margined to the apex, the scarious portion form- 

 ing less than one-half of the area of the bract; seeds not shiny (10). 

 10. Herbage glabrous or sparsely villous; bracts triangular-lanceolate or 



deltoid; seeds olive brown at maturity 10. P. wrightiana. 



10. Herbage copiously villous or sericeous; bracts ovate-lanceolate; 

 seeds black, or nearly so, at maturity 11. P. argyraea. 



1. Plantago heterophylla Nutt., Amer. Phil. Soc. Trans, ser. 2, 



5: 177. 1837. 

 Near Casa Grande, Pinal County, 1,400 feet {Peebles 936), in a 

 stream bed, February. New Jersey to Florida, Texas, southern 

 Arizona, and southern California. 



2. Plantago hirtellaKunth in H.B.K., Nov. Gen. etSp. 2: 187. 1817. 

 Chiricahua and Huachuca Mountains (Cochise County), Santa 



Catalina Mountains (Pima County), 5,500 to 8,000 feet, springy or 

 boggy places along streams, July to September. Southern Arizona 

 to tropical America. 



The species is represented in Arizona by var. mollior Pilger. 



3. Plantago virginica L., Sp. PL 113. 1753. 



Coconino and Pima Counties (doubtless elsewhere), 3,000 to 7,000 

 feet, commonly in moist soil, February to April (in southern Arizona). 

 Connecticut to Michigan and Missouri, south to Florida, Arizona, 

 and southern California. 



4. Plantago rhodosperma Decne. in DC, Prodr. 13 1 : 722. 1852. 

 Gila, Maricopa, Pinal, and Pima Counties, 1,200 to 5,000 feet, 



mostly along streams, March to May. Mississippi and Oklahoma to 

 Texas and Arizona. 



5. Plantago lanceolata L., Sp. PL 113. 1753. 



Navajo, Coconino, Pinal, and Pima Counties, rare in Arizona, lawns 

 and meadows, April to July. Widely distributed in the United States ; 

 naturalized from Europe. 



Commonly known as ribwort or buckhorn plantain. 



6. Plantago major L., Sp. PL 112. 1753. 



Navajo and Coconino Counties to Cochise, Santa Cruz, and Pima 

 Counties, 1,000 to 7,000 feet, moist soil along streams, March to 

 October. Widely distributed in the United States; naturalized from 

 Europe. 



Common plantain. 



7. Plantago eriopoda Torr., Ann. Lye. N. Y. 2: 237. 1828. 

 Kaibab Plateau, Coconino County, 8,700 feet (Kearney and Peebles 



13739), moist meadow, August. Canada to New Mexico, northern 

 Arizona, and California. 



The collection cited is not typical, being relatively narrow-leaved, 

 with loosely villous herbage and very little "wool" about the crown. 



8. Plantago purshii Roem. and Schult., Syst. Veg. 3: 120. 1818. 

 Apache County to Mohave County, south to Cochise, Santa Cruz, 



and Pima Counties, 1,000 to 7,000 feet, dry slopes and mesas, February 

 to July. Canada to Texas, Arizona, and southern California. 



There occur in Arizona both the typical form of the species, with 



