Apr., 1921] 
HANSON — MALVACEAE IN TEXAS 
205 
Summary 
^ I. In this paper several counties in the extreme southeastern part of 
Texas and the southwestern part of the state from Corpus Christi and San 
Antonio west to New Mexico were studied. 
2. A total of 66 species of Malvaceae were found; 55 of these are native, 
9 introduced and found only in cultivation, i introduced and found both in 
cultivation and as a weed, and as an introduced weed. These species 
are listed in Table i . 
3. In the Semi-tropical Gulf Strip 32 native species were found, in a 
very small area of the Austroriparian 4, in the large area of the Lower 
Sonoran 35, and in the Upper Sonoran 22. 
4. Classifying these species according to habitat: in open woods in the 
southeastern part of the state 3 species were found, in southeastern swamps 
3, in southeastern prairies 2, in plains 16, in southwestern woods along 
streams and lakes 21, in southwestern chaparral 19, in palm woods in vicinity 
of Brownsville only 9, on rocky slopes in west and southwest 22, in alkaline 
soil in west 2. 
5. Semi-tropical species of limited distribution are: Bastardia viscosa, 
Malachra capitata, Ahutilon pedunculare, A. jacquini, A. triquetrum, Wis- 
sadula periplocifolia, and Cienfiiegosia sulphur ea. 
6. Western species of decidedly xerophytic type are: Disella spp., 
Sphaeralcea spp., Sida spp., Ahutilon malacum, Hibiscus denudatus var. 
involucellatus , H. couUeri, Malvastrum coccineum, and ilf. elatum. 
7. Eastern mesophytic species are Hibiscus lasiocarpus, H. militaris, 
and Kosteletzkya althaeifolia. 
8. Species of very wide distribution are: Callirrhoe involucrata, Mal- 
vastrum americanum, Malva parviflora, Sida diffusa, S. spinosa, S. hastata, 
Ahutilon incanum, and Malvaviscus drummondii. 
University of Colorado, 
Boulder, Colorado 
BIBLIOGRAPHY 
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14. 1908. 
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