154 BOTANY OF THE VOYAGE OP H.M.S. HEEALD. 
dcntatse^ sive ligulatse, ligula brevi ovata^ apicc plerumque bifida ; sfijhts apicc bifidus, ramis brcvibus 
obtutiis divcrj^eutibus revolutis. CoroU(B florum masculorum tubulossCj tubo gracilis fauce valde 
ampliata, profunde 4- vel S-dentata^ nems 4 vcl 5 in sinus dentium excurrentibus perduct?ej an- 
ther<B exserta;, basi ecaudata^j connectivo apice in appendiccm liberam ovatam acutam producto; 
polhn spbaeiicum ccliinulatum ; stylas indivisus, apice pauUisper incrassatns subtruncatus. Achmnia 
florum foemineorum fertilia dura crassa obovata subcompressaj apice tubcrculo bifido coronata^ cie- 
tenim calva, prope basin areola latcrali cxcayata. Achmnia florum masculorum lincana, stcrilia. — 
Hcrba; di- vel trichotorruB, undique pilis longis patentibus plants albis articulutis e basi lata sensim 
angustatis hirsute ; foliis oppositis, suhsessiHhus, lanceolatis, subintegerrimisj obscure 3- vel 5-nerviis ; 
capitulis axillaribus et terminallbus, solltariis vel yembiis, brevissime pedicellatis subsessilibusve, parvis ; 
in America {squinoctiali indigent. 
580. TJnxia digyna, Steetz (Tab. XXX.) ; capitulis subscssilibus, involucri interioris squamis 
4, floribus focmiucis 2 tubulosis insequalitcr 3-dentatis, masculis 3-5 profunde 5-dentatis. About 
Panama. 
Radix annuaj e fibris nnmcrosis ramosis flexuosis gracilibus constans. Caidis 1-3-pedalis et 
ultra^ teres, pilis longis patentibus articulatis albis dense liirsutus, infra medium tricliotomus, supra 
dicliotomus. Pili ejus et totius plantse basi lata plani^ sensim in acumen tcnuissimum attenuati, 
singular! modo aiiiculati sunt; articuli scilicet (oculo optime armato observati) longiusculi^ in^- 
quales, alii quadrangulares, utriuque truncati, t^niseformes, cum aliis multoties angustioribus tere- 
tibus liinc inde alternant. Folia opposita, omnino fere scssilia et integcrrima, vel remote et obsolete 
sen-idata, utrinquc birsuta; inferiora l-l|-polIicaria, basi semipoUiccm lata; superiora sensim decre- 
scentia, semipollicaria vel minora, basi 3-1 lineam lata. Capitula minuta, 1^ lineam circiter longa et 
lata, ovata, subsessilia, axillaria et terrainalia, solitaria vel gemina. Involucri conniventis squamae 
esteriorcs duse oppositee, lanceolatse, bracteaeformes, berbace^, extus hirsutte et ciliatte, intus glabra ; 
squamai involucrales intcriores 4, binsc laterales oppositas, carinata:, longitudinal iter plicata?, ovat^e, 
herbaccje, dorso hirsuta;, ncrvosse, achicnia fertilia includentes, reliquai bin^ ante anthesin a squamis 
lateralibus carinatis utrinque tectse, subscariosse, planse, late obovata, nerds 7-9 longitudinalibus 
perductse, glabcrrimse, margine vix ac nc ^dx qiiidcm brevitcr ciliata;. Ackicnia fertilia glabra, nigra, 
lineam fere longa et lata. Receplaculum, flores ct omnia rcliqua supra in cliaractere turn generico 
turn spccifico descripta et in icone delineata sunt. 
Tliis species approaches U. campliorata, Linn. fil.,-~of which I possess a specimen gathered by 
Eichard Schomburgk, in British Guiana,— in the habit as well as in shape, size, and pubescence of the 
leaves, even in the long articulated hairs. But U. campliorata, Linn., is well distinguislied by the somewhat 
greater and conspicuously pedicelled capitula, by the inner iuvolucre, consisting of five scales, of which the 
two lateral arc plicate and opposite, the three others flat. Otherwise it differs particularly by the greater 
number of florets, each capitulum containing five ligulate female ones and five to seven male. The obovate 
ligulai however, which are bifid at the summit, scarcely exceed the length of half a line. U. liimuta, Bich., 
is unknown to me. 
Plate XXX. Fig. 1, capitulum; 2, 3, 4, scales of the involucrum; 5, female flower; 6, stigma; 
7, ovary; 8, male flower; 0, male flower cut open; 10, anther. 
581. Baltimora Scolospermum, Stcctz. Scolospcrmum Baltimoroides, Lessing, Liim^a, tom. 5 
(1830). p. 152. tab. 2. fig. 19-21, 23-31.— >Sr. Fougerouxia, Dc Cand. Prodr. tom. 5. p. 509. 
Var. Panamensis, Steetz ; paleis receptaculi acuminatis minus ciliatis, acba?niis radii tnquctris, 
apicibus angulomm in appendiccm alatam obtuse ovatam miicam productis. Panama, in savanas. 
