54 Mr Don on the genus Codon. 



copious albumen, these families are connected with Polemon'u 

 acea, and Priinulacea, 



CODON, L. 



Syst. Linn, DECANDRIA MONOGYNIA. 

 Ord. Nat. HYDROLEACE.E, Nobis. 

 Calyx multi (10-12)- partitus: laciniis subulatis, erectis ; altemis minoribus. 

 Corolla tubulosa, calyce longior, basi torulosa, costis lobis numero sequji- 

 libus peragrata: limbo 10 v. 12-fido: lobis oblongis, obtusis, carinatis, zes- 

 tivatione imbricatis; altemis parum minoribus. Stamina 10 v. 12, laci- 

 niis coroUae alternantia, fomicibus totidem compresso-tetragonis h fundo 

 ortum ducentibus inserta : Jilamenta subulata, glabra : antherce medio ad- 

 natae,incumbentes, biloculares: loculis parallelis, longitudinaliter dehiscen- 

 tibus, nisi ad utramque extremitatem, omnino connatis. Pollen f arinaceum. 

 Pistillum 1 : ovarium biloculare : ovulis erectis : stt/lus semibifidus, basi 

 pUosus : stigmata simplicia, obtusa. Capsula ovata, acuminata, bilocularis, 

 valvis 2, apice dehiscens, polysperma. Dissepimsntum duplicatum, mar- 

 ginibus revolutis, seminiferis. Semina numerosa, angulata, copiose pa- 

 pillosa : testa simplici, cartilagine^ : albumen copiosum, carnosum. Em~ 

 hryo erectus, axilis, modic^ arcuatus; cotyledones brevissimae: radiculd 

 longissim^ filiformi, obtusa, umbilicum spectanti. 



Herba (Capensis) annua, aculeis subulatis, rectis, albis undiqvs copiose ornata. 

 Radix /im/brwiis? Caulis erectus^ ramosus, teres, flexuosiis, robu^ius, calamo 

 scriptorio vix crassior, pedalis v. sesquipedalis. Folia altema, petiolata, ovato- 

 oblonga, apicem versics parum attenuata, sed obtusa, substantia crassiuscula 

 camosa, subtiis costata, margine recurva et subrepanda, pilis setosis brevissimis' 

 utrinque copiose vestita, scabra, 2~3'pollicaria, ad marginem et infra ad cos~ 

 tarn prcecipue aculeata. Petioli sesqui v. bipollicares, supra planiuscuU, levi 

 ter canaliculati, subtiis convexi. Flores magni, solitarii, pedunculati, extra ~ 

 alares, in caulis apice subracemosi, basi foliis 2 angustioribus scepe bracteati. 

 Corolla alba, purpureo-variegata. 



1. C RoyenL 



Codon Royeni, Linn. Syst. Nat. ed. 13. p. 292 Thunb. Prodr, p. 80 



WUld. Sp. PI. 2. p. 540 — Andr. Rep. t. 325 Persoon, Synops. p. 466. 



Had. ad Promontorium Bonae SpeL Thunberg. Niven. 0. (V. s. sp. 

 in Herb. Linn, et Lamb.) 



The SibthorpiacecE may be adduced as affording also an ex- 

 ample of increase in the number of the parts of the flower, in 

 the genus Disandra, whose flowers are most frequently 7-cleft 

 and heptandrous. This small group is very nearly related to 

 the PrimulacecB, with which it agrees in its symmetrical flowers, 

 capitate stigma, and large, globular, central placenta, but dif- 

 fers in having the stamina alternating with the lobes of the co- 

 rolla, and a bilocular ovarium. 



