180 A Collection of Mexican Plants. [ZOE 
broadly auriculate-clasping, upper leaves similar and smaller; in- 
florescence in a terminal spike and on short branches from the 
axils of the upper leaves; flowers light purple, petals linear, nar- 
rowed at the base, 3 mm. long; immature siliques 1 cm. long ona 
longer pedicel. ; 
Collected on Ixtaccihuatl, 1903. 
Thelypodium australe. An erect perennial, stems hirsute, 
especially below; leaves glabrous 2-4 cm. long, somewhat spatu- 
late, obtuse, entire, 5-7 mm. wide, narrowed to near the base 
then broadly auriculate; petals rose-purple, 3 mm. long: stigma 
slightly 2-lobed; immature siliques ascending, 2m. long on a 
shorter pedicel, forming a loose spike more than 2 dm. long. 
The specimens are young and do not have mature fruit. Col- 
lected on Ixtaccihuatl, 1903, at 9-10,000 ft. elevation, growing in 
open woods. No. 304. 
Dalea Lemmoni Parry, was collected at Ixmiquilpan, Hidalgo, 
July, 1903, No. 405. The type of the species was found by Lem- 
mon near Ft. Bowie, South Arizona, and a variety, daxa Wat- 
son, has been distributed with Pringle’s sets, No. 1758, from Za- 
catecas, but this variety seems like a distinct species. Dr. Pur- 
pus’ plant extends the range of D. Lemmonii much southward. 
Machaonia fasciculata Gray, was collected on the Sierra de la 
Mesa, near Ixmiquilpan. The specimens agree with Dr. Gray’s 
short description. The upper leaves are simply, and the lower 
fasciculately ternate. No. 446. 
Spermacoce ambigua. Glabrous' or hirtello-puberulent; 
stems 4-winged; stipular bristles few, longer than the sheath; 
leaves opposite, the lower ones apparently fascicled on account of 
the development of young shoots in the axils the larger ones lin- 
ear-lanceolate, attenuate into a petiole 2-3 cm. long, 5 min. 
wide; inflorescence axillary or in terminal spikes of small I-5 
flowered cymes, the uppermost minutely bracted; internodes 1-2 
em. long; peduncles and pedicels 1-2 mm. long; flowers tetra- 
merous; Corolla 2 mm. long, short funnel-form, lobes short, lin- 
ear-lanceolate; style -shortly branched; fruit turbinate, 1% mm. 
long; short calyx lobes persistent. 
