vol. 5] Erysimum Grandiflorum Nutt. 103 



ones exserted: pods long, slender, almost spreading, the cross- 

 section sharply rhombic." 



A large plant of the Mt. Diablo Range, California, growing 

 only on open grassy summits: the pale flowers large and delight- 

 fully fragrant." 



The writer has never seen this species but it probably belongs 

 to the aggregate and ought to be included. 



Erysimum concinnum n. sp. Apparently biennial, stem 

 stout, simple, erect, 15 cm. high. Pubescence simple and 

 bifid, upwardly appressed. Radical and lower cauline leaves 

 spatulate to oblanceolate, tapering to broad margined petioles as 

 long as the blades, altogether about 5 cm. long: margin run- 

 cinate-dentate with mucronate teeth, blades 5-10 mm. wide: upper 

 leaves lanceolate or oblong, sessile or on very short petioles. 

 Flowers large, 3 cm. or more in diameter, canary yellow, crowded 

 in a capitate corymb, fragrant even when dry; pedicels stout, 

 ribbed, 10-12 mm. long. Sepals pubescent externally, 15 mm. 

 long: the two outer slightly narrower than the inner, 3 mm. wide, 

 thickened and hooded at apex: the two inner saccate at base, 

 carinate, membranous at apex. Petals with orbicular blades 10- 

 15 mm. in diameter, sparingly pubescent externally, tapering to 

 an exserted claw 15-18 mm. long. Stamens with sagittate anthers, 

 5 mm. long, exserted from the throat of the corolla, with filaments 

 broadening towards the base, the 2 short ones narrower than the 

 others which are 2 cm. long and imm. wide. Pistil as long as the 

 longer filaments, surmounted by a broad, shallowly-lobed, sessile 

 stigma. Immature pods, flattened, nerved, becoming spatulate at 

 the apex below the stigma, 8 or 9 cm. long; the upper ones erect- 

 spreading, the lower falcately recurved-spreading. Collected by 

 II. E, Brown (No. 708"), near Mendocino, Mendocino County, 

 California, June, 1898. 



Under this species are also included specimens collected by the 

 writer at Bodega Point April 1S99 and again June of the same 

 year. The last have ripe fruit from which the following descrip- 

 tion is drawn. Siliques 2-5 mm. broad, the longest 15 cm. long, 

 with sessile 2-lobed, stigmas, valves keeled; pedicels stout, 1-2 cm. 

 long. Seeds 3 mm. in diameter with a wing almost .5 m. broad, 

 completely encircling the seed; cotyledons accumbent. 



