BARTRAM: BOTANIZING IN SOUTHERN ARIZONA 249 
CARLOWRIGHTIA ARIZONICA Gray. Leaves and capsules persistent 
enough for identificatio 
SIPHONOGLOSSA LONGIFLORA (Torr.) Gray. Frequent on arid slopes 
west of Tucson. Leaves and capsules persistent. 
RUELLIA TUBEROSA OCCIDENTALIS Gray. Infrequent near Picture Rocks- 
Old capsules persistent. 
CHILOPSIS LINEARIS (Cav.) Sweet. Along arroyos in the foothills- 
TENOLOBIUM INCISUM Rose & Standl, Rocky ledges and crevices 
among the foothills. The persistent leaves and showy yellow capsules make 
this a clean and attractive plant throughout the winter. 
M STELLATUM Kellogg. This plant makes considerable growth 
from a diffuse woody base during the winter, but there was no evidence of 
bloom by January 30th. Frequent on ledges and rocky hillsides. 
SAMBUCUS MEXICANA Presl. oe along water courses and in 
cultivation. In bloom by mid-Janua 
PTILORIA PAUCIFLORA (Torr.) Raf. A common plant of the arid plains 
and foothill blooming through ea winter 
PEREZIA WricutTi Gray. In full eect on January 21st. Infrequent 
on arid rocky slopes near Picture Rocks. 
TRIXIS CALIFORNICA Kellogg. In full flower during January. Abundant 
and quite showy among rocks in the foothills. 
HYMENOCLEA MONOGYRA Torr. & Gray. A tall slender weed-like 
shrub with persistent filiform leaves and winged fruit. In the mouth of Pima 
Canyon. 
FRANSERIA DELTOIDEA Torr. One of the characteristic plants of dry 
gravel . near the foothills. Buds well developed by January 30th 
but no flow 
pasipie SOLIDAGINIFOLIUM Gray. Ledges at the mouth of Sabino 
Canyon 
LEOSANTHUS BACCHARIDEUS (Gray) Kuntze. Infrequent on ledges 
near the mouth of Pima Canyon. Leathery leaves and flower heads very 
persistent. 
COLEOSANTHUS COULTERI (Gray) Kuntze. Common on rocky hillsides. 
CoLEOSANTHUS WRIGHTII (Gray) Britton. Ledges in the mouth of 
Sabino Can 
Se ccs coryMBosuM DC. Confined to the mouth of Pima 
Canyon 
GUTIERREZIA GLOMERELLA Greene. Leaves and old heads persistent. 
Frequent on the plains. 
SIDERANTHUS AUSTRALIS (Greene) Rydb. Common on the gravel plains. 
coma Hartweci (Gray) Greene. Forming dense clumps on ridges 
and knolls in the gravel plains 
CHRYSOMA LARICIFOLIA (Gray) Greene. Rock clefts and ledges in the 
arid foothills. Flowering casually through the winter months. 
