S6 NORTH AMERICAN FLORA [Volume 24 



87. Parosela acutifolia (DC.) Rose, Bot. Gaz. 40: 144. 1905. 



Dalea acutifolia DC. Prodr. 2: 245. 1825. 



A shrub, 1-3 m. high; branches glabrous and terete; leaves 5-12 cm. long; stipules lan- 

 ceolate, 3 mm. long; petiole about 8 mm. long; rachis glabrous, slightly margined, sparingly 

 punctate; stipels gland-like; leaflets 7-11, elliptic or oval, acute at the base, cuspidate at the 

 apex, 1-2.5 cm. long, glabrous and bright-green on both sides, glandular-punctate beneath; 

 peduncles glabrous, axillary, 5-12 cm. long, glabrous; spikes elongate, rather lax, 5-15 cm. 

 long; bracts ovate, acute, brown, minutely ciliate, caducous; calyx-tube broadly campanulate, 

 2.5 mm. long, silky-villous, strongly 10-ribbed; calyx-lobes triangular-lanceolate, abruptly 

 long-acuminate, about equaling the tube; corolla at first greenish-yellow, turning dark reddish- 

 purple; blade of banner rounded-ovate, nearly 3 mm. long, the claw 2 mm. long; blades of the 

 wings 4 mm. long, those of the keel-petals 5 mm. long, the claws of both 2 mm. long; pod broadly 

 obliquely obovate, silky villous. 



Type locality: Chilapa Mountains, Guerrero. 

 Distribution: Morelos and Guerrero. 

 Illustration: Moc. & Sesse, Calq. Dess. pi. 22S. 



XXI. Cyaneae. Perennial herbs. Leaflets several pairs, small, elliptic, glabrous. 

 Spikes head-like; bracts ovate, glandular-dotted, sparingly hairy on the back. Calyx densely 

 pubescent; lobes lanceolate-subulate, equaling the tube. Corolla blue with a white banner, 

 the blade of the latter orbicular. Wings and keel-petals inserted towards the base of the 

 staminal tube, the blades obliquely obovate. 



88. Parosela cyanea (Greene) Rose, Contr. U. S. Nat. Herb. 10: 

 105. 1906. 



Dalea cyanea Greene, Pittonia 1: 153. 1888. 



A perennial, with tufted stems; stem glabrous, angled, decumbent at the base, sparingly 

 glandular-dotted, branched above, about 3 dm. high; leaves 2-3 cm. long; stipules lanceolate 

 or subulate, 3-4 mm. long; rachis glabrous; stipels conic, gland-like; leaflets 9-13, elliptic, 

 7-10 mm. long, obtuse, glabrous on both sides, minutely glandular-dotted beneath; peduncles 

 terminal, 1-4 cm. long; spikes head-like; bracts ovate, acuminate, glandular-dotted and spar- 

 ingly pubescent on the back, densely pubescent on the margins; calyx-tube campanulate, 

 3 mm. long, densely pubescent; lobes lance-subulate, about equaling the tube; banner nearly 

 white, the blade orbicular, 5 mm. long, the claw 4 mm. long; the other petals sky-blue, the 

 blades obliquely obovate, 6-7 mm. long, those of the keel-petals with a smaller basal lobe, the 

 claws 3-4 mm. long. 



Type locality: Sierra Madre. back of Durango. Mexico. 

 Distribution: Known only from the type locality. 



XXII. Tuberculatae. Low shrubs or undershrubs, with conspicuously glandular- 

 tuberculate branches. Spikes at the ends of the branches, dense, from globose to cylindric; 

 bracts lanceolate to obovate, not much exceeding the calyx. Calyx-tube pubescent, not very 

 strongly ribbed, nor very conspicuously glandular; lobes deltoid to lance-subulate, shorter 

 than or equaling the tube in length. Corolla purple with a white or ochroleucous banner. 

 Blade of the banner mostly rounded-cordate. Wings and keel-petals inserted below the middle 

 of the staminal tube, the blades broadly obliquely obovate, with a rounded basal lobe, the 

 keel-petals somewhat larger than the wings and much longer than the banner. Pod pubescent. 



89. Parosela Hemsleyana Rose, Contr. U. S. Nat. Herb. 

 10: 104. 1906. 



Dalea ramosissima Hemsl. Biol. Centr. Am. Bot. 1: 245. 1880. Not D. ramosissima Mart. & Gal. 

 1843. 



A shrub, probably a meter or more high, with numerous ascending, glabrous, and densely 

 glandular- tuberculate branches, often reddish; leaves small, spreading, 1-1.5 cm. long; stipules 

 minute, subulate; petiole very short; rachis glabrous, glandular-dotted; leaflets 9-15, oblong, 



