296 CONTRIBUTIONS TOWARDS A FLORA OF BRAZIL. 
SERPÆA. Genus novum. 
Char. Gen. Capitulum multiflorum heterogamum, floribus radii 
neutris ligulatis 1-serialibus, disc? tubulosis hermaphroditis. 
Involuerum hemisphæricum, squamis 3-seriatis subæqualibus, 
exterioribus foliaceis ovatis obtusis reticulatis serrato-dentatis, 
intimis oblongis obtusis membranaceis. Receptaculum conicum 
paleaceum, paleis lineari-oblongis obtusis achænia amplectentibus. 
Styli rami exserti, subulati, hispidi. Achenia radii triquetra 
vix subulata, angulis in aristam persistentem productis, dentibus 
setiformibus paucis interjectis; disci compressa, 2-aristata, vix 
alata. — Herbæ perennes Brasilienses habitu Helianthi, ramis 
teretibus, foliis oppositis, petiolatis, oblongis vel ovatis, serrato- 
dentatis, triplinerviis, scabris, capitulis longe pedicellatis, ter- 
minalibus, solitariis vel ternis, floribus luteis. 
In the structure of the achenia and pappus, the two plants 
on which I have established this genus, coincide with Lipochata, 
but they cannot be associated with it on account of their neutral 
ligules. Their nearest affinity seems to be with Oyedæa, from 
which they are distinguished by their conical receptacle and the 
nature of their achzenia. 
I have named the genus in remembrance of Dr. Serpa, who was 
Professor of Botany in the College at Olinda during my visit to 
Pernambuco, a learned and amiable old gentleman, passionately 
devoted to the study of the medicinal plants of his native country. 
3852. S. ovata; caule ramoso, ramis pubescenti-tomentosis, foliis 
petiolatis late ovatis utrinque obtusis serratis triplinerviis supra 
scabridis subtus pubescenti-tomentosis, pedicellis terminalibus 
ternis, involucri squamis exterioribus in appendicem foliaceam 
subrotundam reticulatam tomentosam productis, intimis ovato- 
oblongis obtusis glabris. 
Has. Dry upland Campos near Arrayas, Province of Goyaz. 
April, 1840. 
Herba perennis, erecta, ramosa, bipedalis. Folia opposita, 2-3 
poll. longa, 15-21 lin. lata. Pedicelli tomentosi, 3 poll. longi. 
— subglobosum. Involucrum 4 lin. longum. 
(To be continued.) 
