1390 



LOASA^ ambrdsiaefdlia. 

 A7nhrosia-leaved Loasa. 



POLYADELPHIA POLYANDRIA, or POLYANDRIA MONOGYNIA. 



Nat. ord. LoasEjE Jussieu. — (^Introduction to the natural system of 

 Botany, p. 58.) 



LOASA.—Supn}, vol. 8. fol. 667. 



L. amhrosicefolia ; foliis alternis petiolatis bipinnatifidis, lobis lobulisque 

 subobtusis, pedicellis extra-axillaribus, lobis calycis lanceolato-linearibus 

 acutis petalis brevioribus. — Decand. prodr. 3. 342. 

 L. ambrosisefolia. Juss. in ann. mus. 5. t. A. fol. 1. 

 L. hispida. Graham in Jamieson's journal, Oct. 1830,/?. 369. 



Annua. Caulis erectus, rigidus, teres, pallide viridis, ramosus, undique 

 pilis rigidis urentibus, subdefexis, fuscis vestitus. Folia alterna, bipinna- 

 tifda, hispida, lobis planis, valdt incequalibus, obtusis, nunc dentatis. Pedi- 

 celli hispidi, extra-axillares , versus fastigium caulis provenientes ; unciain et 

 dimidiam longi. Flores nutantes, fiavi, diametro fere. 2-unciali. Ovarium 

 uniloculare, hispidissimum, turbinatum. Sepala reflexa, ovata, obtusa, 

 pubescentia. Petala reflexa, unguiculata, cucullata, sagittata, pubescentia, 

 sepalis multum longiora. Squamse exteriores inflatce, vald^ gibbosce, ob- 

 cordatce , fauce plance ; intra hos adsunt squamulce decern subulatcB,pubescentes, 

 per paria squamis opposita, stamina sterilia simulantes. Stamina in- 

 deflnita, incequalia, intrd cavitates petalorum recondita. Stylus teres, pilosus ; 

 stigmata simplicia ; ovula placentis tribics parietalibus affixa. Semina 

 parva, oblonga, brunnea, minute undique tuberculata, testa molli, nucleo 

 oblongo, embryone in axi albuminis carnosi, arillo nullo. 



For the introduction of this very beautiful new annual 

 we are indebted to Mr. Cruckshanks, who gathered it near 

 Lima. From seeds presented by this gentleman to the 

 Horticultural Society the plant was raised from which our 

 figure was taken. It was placed on the south side of a 

 yew hedge in the Garden of the Society, where it grew 

 vigorously, attaining a height of about 2^ feet, flowering 



A word of unknown derivation. 



