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



3. Samolus vagans Greene, Repert. Spec. Novarum Regni Veg. 7: 

 196. 1909. 

 Cochise, Santa Cruz, and Pima Counties, 3,500 to 6,000 feet, 

 in sand near springs and brooks, May to October, type from Chiri- 

 cahua Mountains (Blumer 1546). Apparently known only from 

 southeastern Arizona. 



4. LYSIMACHIA. Loosestrife 



Plant perennial; stems leafy; leaves opposite or appearing whorled, 

 the petioles conspicuously ciliate, the blades lanceolate or ovate- 

 laneeolate; corolla rotate, yellow; stamens borne on a ring at base 

 of the corolla, the 5 fertile ones alternating with 5 staminodia. 



1. Lysimachia ciliata L., Sp. PL 147. 1753. 



Steironema ciliatum Raf., Ann. Gen. Phys. 7: 192. 1820. 



Apache, Coconino, and Gila Counties, 6,000 to 7,500 feet, moist 

 rich soil, July and August. Canada to Georgia, New Mexico, Arizona, 

 and Washington. 



Represented in Arizona by var. validula (Greene) Kearney and 

 Peebles {Steironema validulum Greene), which differs from most 

 eastern specimens of L. ciliata in its relatively narrow leaf blades, 

 these, at most, obscurely ciliolate. The type of S. validulum was 

 collected near Flagstaff, Coconino County (Lemmon in 1884). 



5. AXAGALLIS. Pimpernel 



Stems low, spreading or procumbent; leaves ovate, sessile; peduncles 

 surpassing the leaves; corolla rotate with scarcely any tube, normally 

 red, the lobes denticulate and bearing stalked glands on the margin. 



The flowers quickly close at the approach of storms, hence the 

 English name poormans-weatherglass. 



1. Anagallis arvensis L., Sp. PL 148. 1753. 



Sacaton (Pinal County), Tucson (Pima County), probably else- 

 where, a w T eed in lawns, April and later. Widely distributed in 

 North America; naturalized from Europe. 



6. CENTUXCULUS. Chaffweed 



Stems short, tufted, ascending, leafy; flowers small, nearly sessile; 

 corolla with a rotate limb and a short tube, usually persistent at the 

 apex of the capsule. 



1. Centunculus minimus L, Sp. PL 116. 1753. 



Graham, Santa Cruz, and Pima Counties, about 4,000 feet, wet 

 soil along streams, apparently rare in Arizona but easily overlooked. 

 Illinois and Minnesota to British Columbia, south to Florida, Texas, 

 and Arizona; Europe. 



7. DODECATHEOX. Shootingstar 



Perennial acaulescent herbs, with a short rootstock, glabrous or 

 nearly so; leaves in a basal rosette, petioled; scapes elongate, bearing 

 1 to many showy flowers in a terminal umbel; calyx and corolla deeply 

 cleft, the lobes narrow; capsule ovoid, dehiscent by valves. 



Handsome plants, sometimes cultivated as ornamentals. 



