114 NORTH AMERICAN FLORA [Volume 25 



11. Kallstroemia longipes Rydberg, sp. nov. 



A branched annual ; stem 3-6 dm. high, erect or nearly so, sparingly silky-hirsute ; 

 stipules lance-subulate, 5-6 mm. long ; leaves 2-6 cm. long ; petioles 8-15 mm. long, 

 longer than the lowest pair of leaflets ; leaflets obliquely oval, 5-25 mm. long, thin, gla- 

 brous above, sparingly hairy beneath, the pairs usually 3, very unequal in size, the upper- 

 most ones much larger than the lowest ; peduncles in fruit 4-8 cm. long, usually much 

 exceeding the leaves ; sepals narrowly linear-lanceolate, 5-8 mm. long, hispid ; petals oval 

 or obovate, about 15 mm. long, golden-yellow ; fruit strigose ; beak 6-8 mm. long, with a 

 conic base ; nutlets 4 mm. long, cross-ridged and tuberculate on the back, slightly reticulate 

 on the faces. 



Type collected at Rosario, Sinaloa, July 22, 1897,/. N. Rose 1S29 (herb. N. Y. Bot. Card.). 



Distribution : Sinaloa to San Luis Potosi ; apparently also Colombia. 



12. Kallstroemia grandiflora Torr.; A.Gray, PI. 

 Wright. 1 : 28. 1852. 

 Kallstroemia grandiflora detonsa A. Gray, PI. Wright. 1 : 28. 1852. 

 Tribulns Fisheri Kellogg, Proc. Calif. Acad. 7 : 162. 1877. 

 Tribnlus grandiflorus S. Wats. Bibl. Ind. 149. 1878. 

 Kallstroemia grandiflora arizonica Cockerell, Bull. Torrey Club 27 : 87. 1900. 



A diffuse annual ; stems suberect or spreading, 2-3 dm. long, or more, angled and 

 channeled or striate, pubescent or hispid with weak twisted hairs and longer cilia, rarely 

 becoming glabrate ; stipules linear-subulate, ciliate, mostly persisting ; petioles as long as 

 the leaflets or shorter ; leaves 2-7 cm. long ; leaflets 5-9 pairs ; blades obliquely oblong, 

 obtuse or acutish, pubescent beneath or glabrate, 8-15 mm. long, ciliate, the terminal pair 

 usually broader, more falcate and shorter ; peduncles usually longer than the leaves, con- 

 spicuously thickened upwards ; sepals linear or narrowly lanceolate, 8-15 mm. long, at length 

 linear-subulate, clothed with long spreading cilia, conspicuously shriveled in fruit, per- 

 sistent, marcescent; petals marcescent, obovate, 12-25 mm. long, orange-colored or yellow; 

 beak 8-10 mm. long, slender, about twice as long as the body of the fruit or longer; carpels 

 10, pubescent, dorsally tuberculate, slightly reticulate on the faces. 



Type locality : Borders of the Gila River, Arizona. 

 Distribution : California to Texas and Colima. 



7. MORKILLIA Rose & Painter, Smiths. Misc. Coll. 50 1 : 33. 1907. 



Chitonia Moc. & Sesse ; DC. Prodr. 1 : 707. 1824. Not Chitonia D. Don, 1823. 



Shrubs. Leaves alternate, odd-pinnate, stipulate. Flowers solitary or in pairs. 



Sepals 4, caducous. Petals 4. Stamens 8, shorter than the sepals. Ovary cyliudric. 



Style 1. Stigma 4-parted. Fruit a large 4-celled, 4-valved, 4-winged, coriaceous capsule. 



Seeds ovate, with a fleshy aril, several in each cell, affixed to the placenta by the broad 



truncate base. Endosperm horny. Cotyledons flat. 

 Type species, Chitonia mexicana Moc. & SessS. 



Leaves acute ; the wings of the fruit produced at the apex and more or less in- 

 curved forming a narrow sinus. 1- M. mexicana. 



Leaves acuminate ; the wings of the fruit scarcely produced at the apex, the 

 sinus being very broad and open, the fruit almost truncate. 2. M. acuminata. 



1. Morkillia mexicana (Moc. & Sesse) Rose & Painter, Smiths. 

 Misc. Coll. 50' : 33. 1907. 

 Chitonia mexicana Moc. & Sesse ; DC. Prodr. 1 : 707. 1824. 



Shrub 3-5 m. high, with grayish-white bark; young branches densely white-tomentose ; 

 leaflets 7-15, elliptic-lanceolate or oblong-ovate, densely pubescent on both sides, 3-5 cm. 

 long, petiolulate, acutish ; stipules subulate ; sepals lanceolate, oblong, or obovate, acutish 

 to rounded at the apex ; petals deep rose-purple, obovate or suborbicular, deeply 

 notched, 3-4 cm. long; filaments slender ; fruit 4-6 cm. long, the wings produced at the 

 apex into free more or less incurved lobes forming a narrow sinus ; aril red ; seeds white 

 with a black spot at the apex. 



Type locality : Mexico [on the " Montezuma " River, fide Engler]. 



Distribution : Hidalgo, Puebla, and Oaxaca. 



Illustrations: Moc. & Sesse, Calq. Dess. pi. xxiv ; Zucc. PI. Nov. Hort. Mon. 1 : pi. 17. 



