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tibus Indiae orientalis per Asiam occidentali-australera, fere totam Europam tempera- 

 tam, Africam septentrionalem et ad Caput ßonae Spei, unica latissime dispersa, etian) 

 in California , plus minusve gregatim vigentes. 



Radix in speciminibus annuis tenuis basin caulis vix diametro aequans, aequalis, 

 nunquain tuberosa v. bulbosa, simpliciuscula, rarni et rainuli primum subcompressi, 

 radicellis subdistichis, unicellularibus, perminutis, tubulosis, densiuscule et rectangu- 

 lalim insidentibus obsiti; v. in perennibus superne in caudices abbreviatos subtorulosos 

 abiens, sed exstolonosa; in suffruticulis et fruticibus lignosa. 



Caulis saepissime herbaceus v. basi indurato-sublignosus, raro lignosus, nun- 

 quam arboreus, semper erectus v. e basi breviter adscendente erectus, nunquain 

 prostrato-radicans, nee scandens, simplex v. parce et sparse ramosus v. subfasti- 

 giato-ramosissimus, semper teretiuseulus et decursu foliorum plus minusve angulosus, 

 glaber v. papilloso-asperulus. 



Folia berbacea, sparsa, angulo vario cauli insidentia, interduni subfasciculato- 

 approximata, basi non articulala, vernatione-plana v. margine undulata, semper sim- 

 plicia, infima semper integra, caetera integra v. ternato- v. biternato-incisa v. pin- 

 natiseeta et insuper prope basin ulrinque ininute unidenticulata v. rarissime 2 — 3 den- 

 ticulata. 



lnflorescentia terininalis, semper simpliciter racemosa v. spicato-raceinosa. 



Flores e peripheria ad centrum evoluti, irreguläres sed symmetrici, hermaphro- 

 diti, raro dioiei v. subpolygami, completi v. in Ochradeno apetali, in axillis brac- 

 tearum solitarii. albi, ochroleuci v. lutei; albi saepius plus minusve odorati, caeteri 

 subinodori. 



Calyx inferus, berbaceus, subirregularis, persislens v. deeiduus, quoad nu- 

 merum partium variabilis. Sepala vix nisi apice aestivatione subimbricata; raro tantum 

 duo, tum sunt superiori-lateralia; v. tria tum duo superiori-lateralia et iinum inferum; 

 v. quatuor tum omnia symmetrice sublateralia (inferum quintum et superum sextum tunc 

 desunt); v. saepius quinque, tum 1 superum, et caetera 4 symmetrice sublateralia; 

 v. saepissime sex, tum 1 superum, 2 superiori-lateralia, 2 inferiori-lateralia et 1 

 inferum; v. raro etiam 7 — Set tum minus regulariter sita, superum impar saepe cae- 

 teris minus. 



Petala sepalis alterna, aestivatione ab origine aperta, deeidua, libera v. raris- 

 sime basi casu coalita, inaequalia v. rarissime aequalia, membranacea, subflabellato- 



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