90 MR. J. MIERS ON THE BARRINGTONIACE#. 
4-angulari, angulis sinuato-alatis, abortu 1-loculari et monospermo. In Nova Cale- 
donia et ins. Art, juxta rivulos: non vidi. 
A tree 26-33 feet high, growing in valleys; its leaves are 7-8 in. long, 23—8 in. broad, 
and subsessile; its racemes are 11-2 feet long, with laxly spicated flowers ; the fruit, with 
4 very undulated wings, and crowned by the calycine lobes, is 5 in. long and 17 in. broad; 
the pericarp is fibrous, and, when the fruit has fallen to the ground, rots after a while, and 
а root protrudes like that of a radish. This species presents the peculiarity of the pre- 
ceding species : of its sepals, often entire, two or three are sometimes partly conjoined. 
5. PGLANCHONIA. 
This genus, proposed by Blume, was first published in 1852, in Van Houtte's * Flore 
des Serres; he had, however, as far back as 1828, described its seminal features in De 
Candolle’s * Prodromus,’ upon a plant referred by him to Gustavia, the seminal characters 
of which were then unknown. Long prior to this, the first known species of this genus 
was found in 1770, in Queensland, by Dr. Solander, and afterwards, in the Gulf of 
Carpentaria, by the late Mr. Robert Brown, who in 1808 discovered it to be a new 
genus, and then described the plant under the name of Butonicoides crenata, in a 
memoir never published, but which is still preserved in the British Museum, He 
changed its name to Careya crenata in 1819, when Roxburgh first established the latter 
genus, of which the internal structure of the seeds was unknown. Planchonia agrees 
with Careya in habit and the form of its fruit, which also contains many seeds, enveloped 
in pulp; but the embryo in the former is dicotyledonous, as in Barringtonia, while iu 
Careya it is analogous to that of all other genera of the family. Brown's description of 
this genus is far more accurate and copious than that of Blume. Succeeding botanists 
gave very laconic characters of four or five species; but Miquel, in 1855, created con- 
fusion by combining them all into two species, with characters almost useless for the 
purpose of distinction, I have carefully examined Brown’s typical plant, and have 
compared this with his original notes. With the analysis I have made of other, more 
recent specimens from another part of Australia, and from those materials, the fol- 
_ lowing generic character is formed :— 
PLANCHONIA, Blume (olim Gustavia, ВІ.). 
Butonicoides, В. Вт. MS.; Careya (in parte), В. Вт. et Benth.; Eugenia, Soland. MSS. 
Sepala 4, distincta, rotundata, subcoriacea, æstivatione paullo imbricata, persistentia. Petala 4, triplo 
| longiora, cuneato-oblonga, reflexa, unguibus tubo staminifero agglutinata et cum Шо caduca. Sta- - 
mina numerosissima, pluriseriata, in tubum brevem monadelpha; filamenta filiformia, petalis lon- 
giora, wstivatione contortuplicata, nonnulla апаш ега. Discus epigynus, plane annularis, margine 
externo tubum staminiferum fulciens, interno in urceolum breviter erectum ore lato expansum; 
stylus tenuiter subulatus, stamina subequans. Stigma parvum, 4-lobum aut fimbriatum. Ova- 
| rium inferum, turbinatum, vertice intra discum concavum, 4-loculare ; ovula in quoque loculo plu- 
B rima, funiculis ad axem radiatim affixa. гира ovato-oblonga, utrinque obtusa, calyce coronata, 
extus leviter opace granulosa, abortu 3- 2- vel l-locularis: pericarpium molliter coriaceum, sub- 
_ Crassum, lignose fibrosum ; semina in loculis pauca vel plura, in pulpa pannosa nidulantia, funi- 
