1225 
TRACHYMÉNE* ceerulea. 
Blueflowered Trachymene. 
— e 
PENTANDRIA DIGYNIA. 
Nat. ord. UMBELLIFERE. $ Hydrocotylinee, 
TRACHYMENE Rudge. — Polachenium oppositè valdè compressum, 
utrinque sed basi preecipuè emarginatum, didymum, calyculo stylisque coro- 
natum. Achenia subrotunda, compressissima, quinquecostata, costis capil- 
laribus curvilineis ; marginalibus brevioribus rectilineis, Commissura clausa, 
angustissima. Corolla subeequalis. Petala integra, absque acumine, ex- 
trorsüm latiora, sessilia (eestivatione valdè imbricata). Umbelle peduncu- 
late, axillares, terminalesve, simplices, multiflore, pedicellis interioribus 
sensim brevioribus, involucrate, Involucra polyphylla, foliola basi in urceolum 
connata, et pedicellis adpressa. Stamina corollá longiora. Styli subulati, 
divergentes, longi. Stigmata simplicia, obtusiuscula. Discus bilobus, mem- 
branaceus, concavus, subcrenatus. Achenia tuberculis minutis ad lentem 
muriculata, alterum sepè abortivum. Folia petiolata, alterna, tripartito- 
multifida. — La Gasca MS. ad Tr. incisam. 
T. cerulea ; pilosa, foliis radicalibus tripartitis, laciniis trilobis incisis : 
superioribus sessilibus tripartitis, petalis obtusis, fructibus glabris. 
T. ceerulea. Graham in Edinb. new phil. journ. 1828, p. 380. 
Didiscus ceeruleus. Dec. MS. Hooker in bot. mag. fol. 2875. 
Obs. Fructus certè evittatus. Ovarium loculo altero sepiús abortiente. 
Pericarpium chartaceum v. potiùs submembranaceum. | Staminum supremum 
ascendens, inferiora declinata, omnia citò caduca. 
This beautiful New Holland annual has only been seen 
in our Gardens during one season.. It first presented itself 
to our notice in the Garden of the Horticultural Society in 
August last, having been raised in that Collection from 
seeds received the previous spring from Mr. Charles Frazer, 
of Sydney in New South Wales. We have subsequently 
heard of it in other Collections in this country; and 
M. Decandolle informs us, that it is also growing in the 
Geneva Garden. It is a half-hardy annual, flowering in 
* So called from ze«x», rough, and 24, a membrane; in allusion to 
the coat of the fruit. 
