WOOTON AND STANDLEY FLOEA OF NEW MEXICO, 491 



Corolla lobes erect or spreading; stamens in- 

 cluded, distinct. 

 Corolla tube equaling or exceeding the 

 calyx, bright pink or rose purple to 



crimson; flowers showy 5. Primula (p. 492). 



Corolla tube shorter than the calyx, white 

 or yellow; flowers very small. 

 Perennials, the stems branched at the 



base; capsules few-seeded 7. Drosace (p. 494). 



Annuals, the stems simple; capsules 



many-seeded 6. Androsace (p. 493). 



1. SAMOLUS L. Brookweed. 



Annual or perennial caulescent herbs with alternate entire fleshy leaves and small 

 white flowers in racemes or panicles; sepals united at the base, persistent, adherent to 

 the ovary below; corolla perigjaious, the tube very short; stamens 5, adnate to the 

 corolla, sometimes alternating with 5 staminodia; ovary 1-celled; capsule 5-valved, 

 hardly elongated; seeds numerous. 



key to the species. 



Racemes sessile or nearly so, numerous, glabrous; calyx 2.5 mm. 



broad 1. S. floribundus. 



Racemes long-pedunculate, few, glandular; calyx 3.5 to 5 mm. 



broad 2. S. cuneatus. 



4 



1. Samolus floribundus H. B. K. Nov. Gen. & Sp. 2: 181. 1817. 



Type locality: "Crescit in maritimis Peruviae juxta portum Callao de Lima." 

 Range: British America to California, Florida, Mexico, and South America. 

 New Mexico: Guadalupe Canyon; Roswell. Wet ground. 



2. Samolus cuneatus Small, Bull. Torrey Club 24: 491. 1897. 

 Type locality: "On limestone rocks or soil, Texas." 

 PtANGE: Texas and southeastern New Mexico. 



New Mexico: Roswell; Carlsbad; Dona Ana Mountains. Wet ground, in the 

 Upper Sonoran Zone. 



2. STEIRONEMA Raf. Loosestrife. 



Leafy-stemmed perennial herbs with opposite petiolate simple entire leaves and 

 axillary yellow flowers on slender pedicels; flowers 5-merous; corolla rotate, 5-lobed, 

 each lobe convolute or involute about its stamen; stamens 5, alternating with 5 stami- 

 nodia; capsules rounded, naked; seeds 10 to 20. 



key to the species. . 



Leaf blades ovate, ciliate 1 . 8. ciliatum. 



Leaf blades lanceolate, not ciliate '. 2. S. validulum. 



1. Steironema ciliatum (L.) Raf. Ann. Gen. Phys. 7: 192. 1820. 

 Lysimachia ciliata L. Sp. PL 147. 1753. 



Type locality: " Habitat in Virginia, Canada." 

 Range: British America to Arizona, Alabama, and Georgia. 



New Mexico: Pecos; Las Vegas; Beulah; Gallinas Planting Station. Wet ground, 

 in the Transition Zone. 



2. Steironema validulimi Greene, Contr. U. S. Nat. Herb. 16: 158. 1913. 

 Type locality: Along Oak Creek, near Flagstaff, Arizona. 



Range: New Mexico and Arizona. 



New Mexico: Mogollon Mountains. Wet soil. 



