APPLICATION OF PHYTOSOCIOLOGICAL TECHNIQUES 321 



Table 24. Composition and structure of the natural forest of the Horto Botdnico 

 do Instituto Agronomico do Sul, Pelotas, Rio Grande do Sul. Species are arranged 

 by strata, life-form,^ and leaf-size classes}' with a distinction between those more 

 and those less important. Basic data by Dr. Jose da Costa Sacco, with the assistance 



of the authors (Cont.) 



Life form Leaf size 



D. Low shrub stratum: 0.8-2.0 m. Total coverage 30-40% 



More important species 



Abutilo7t molle (Ort.) Sweet. Malvaceae 



Daphnopsis racemosa Griseb. Thymelaeaceae 



Dianthera nodosa Benth. & Hook. f. Acanthaceae 



Solanum atiriculatum Ait. Solanaceae 



Baccharis spicata (Lam.) Baillon Compositae 



Eupatorium buniifoliiim Hook. & Am. Compositae 



Pavonia communis St. Hil. Malvaceae 



Baccharis dracunculifolia DC. Compositae 



Baccharis articulata (Lam.) Pers. Compositae 



Calliandra tweedii Benth. Leguminosae 



Opuntia monacantha Haw. Cactaceae 



Less important species 



Abutilon pauciflorum St. Hil. Malvaceae 



Eupatorium inulaefolijim HBK. Compositae 



Lantana camara L. Verbenaceae 



Buettneria urticifolia K. Sch. Sterculiaceae 



Guadua trinii (Nees) Rupr. Gramineae 



Guettarda uruquensis Cham. & Schlecht. Rubiaceae .... 

 Discaria longispina Miers Rhamnaceae 



E. Herb stratum: 0-0.8 m. Total coverage 80-90% 

 Perennial plants, normally evergreen 



More important species 



Clidemia hirta (L.) D. Don Melastomaceae 



Baccharis anomala DC. Compositae 



Solanum gracile Dun. Solanaceae 



Baccharis ochracea Spreng. Compositae 



Bromelia antiacantha Bertol. Bromeliaceae 



Tradescantia fiuminensis Veil. Commelinaceae 



Oplismenus hirtellus (L.) Beauv. Gramineae 



Chaptalia nutans (L.) Polak. Compositae 



Elephantopus tomentosus L. Compositae 



Paspalum inaequivale Raddi Gramineae 



Paspalum panictdatum L. Gramineae 



Paspalum mandiocanum Trin. Gramineae 



Panicum helobium Mez. Gramineae 



