FLOWERING PLANTS AND FERNS OF ARIZONA 577 



seed or becoming closely adherent to the seed coat, the dorsal wall more 

 persistent. 



Key to the species 



I. Fruit a flattened disk of radiating carpels, these conspicuously long-hirsute or 



hispid, with an elongate dorsal spur: calyx spreading in fruit (2). 



2. Petals purple; stems and petioles sparsely hirsute with long, mostly simple, 



spreading or retrorse hairs, often also puberulent, sometimes glabrate, 



carpels 9 to 20, hispid, not reticulate on the back; leaf blades truncate 



or short-cuneate at base 1. A. cbistata. 



2. Petals orange yellow, purplish at base: stems and petioles densely puberulent 



or short-pilose, a few long, simple hairs often also present, the pubescence 

 slightly viscid; carpels 10 to 12, hirsute, strongly reticulate on the back 

 with black veins; leaf blades (the lower ones) cordate or subcordate at 



base 2. A. wrightii. 



1. Fruit hemispheric or somewhat lower, but not flat and disklike : carpels puberu- 

 lent to short-hirsute, rounded, umbonate, angled, or short-spurred on the 

 back (3). 



3. Inner layer of the carpel wall separating from the outer at maturity as a 



reticulate, loose, saclike envelope of the seed; lower leaves with broadly 

 cordate-angulate or shallowly lobed blades (4). 

 4. Upper leaves mostly with elongate, hastate blades: petals orange yellow; 

 carpels prominently angled or short-spurred on the back. 



3. A. CREXATIFLORA. 



4. Upper leaves with narrowly 3- to 5-lobed blades; petals purple: carpels 



rounded on the back 4. A. reticulata. 



3. Inner layer not separating or, if so, then becoming closely adherent to the 

 seed and arilliform: carpels more or less umbonate or gibbous on the 

 back: stems tall, wandlike: inflorescence elongate, often nearly leafless 

 above; pubescence often somewhat viscid (5). 



5. Petals about 12 mm. long, more than twice as long as the calyx, orange 



yellow, often fading pink or purplish; plant velvety short-pubescent, 

 also villous (at least on the lower part of the main stem), with long, 

 spreading or retrorse, simple hairs: leaf blades broadly ovate (up to 

 10 cm. wide), abruptly long-acuminate at apex, deeply cordate at 

 base, crenate-dentate: lateral walls of the carpel persistent but fragile 



and becoming more or less torn 5. A. abutiloides. 



5. Petals not more than 6 mm. long, not more than twice as long as the calyx: 

 plant puberulent or glabrate; upper leaves with narrow, elongate, 

 usually hastate blades; lateral walls of the carpels breaking up before 

 maturity (6). 

 6. Carpels 8 or 9, strongly several-nerved on the back; petals purple. 



6. A. thurberi. 



6. Carpels 5 to 7, 1-nerved on the back: petals orange yellow, often fading 



pink or purplish 7. A. pentaschista. 



1. Anoda cristata (L.) Schlecht., Linnaea 11: 210. 1837. 



Sida cristata L., Sp. PL 685. 1 753. 



1 Anoda lavaterioides Medik., Malvenfam. 19. 1787. 



Graham, Gila, Pinal, Cochise, Santa Cruz, and Pima Counties. 

 3,500 to 5.500 feet, common in moist meadows and along: streams. 

 August to October. Western Texas to southern Arizona, southward 

 to South America. 



Highly variable in size of plant and shape of the leaf blades, these 

 being usually narrowly to broadly triangular in outline and coarsely 

 crenate, often hastate, the basal ones sometimes digitately several- 

 lobed. The form with lobed leaves is var. digitata (A. Gray) Hochr.. 

 which intergrades freely with forms having less dissected leaves. 



2. Anoda wrightii A. Gray, PL Wright. 2: 22. 1853. 



Cave Creek, Chiricahua Mountains, Cochise County, about 5,000 

 feet, rich soil in pine forests, September (Harrison and Kearm y 6179 , 

 Southwestern New Mexico, southeastern Arizona, and Mexico. 



