Pali mbewu zambiri zosawerengeka ku North America zomwe zatsala pang'ono kutha. Zimatengera kuyesetsa kuti zisungidwe.
Kukhululuka
Arizona agave ndi yokoma yomwe ili ndi tsinde lalifupi; zomera zina zilibe konse. Mpaka zaka za zana la 20, panali mitundu yoposa zana ya agave, koma lero ndi 2 zokha zomwe zatsala ku Arizona.
Phiri la Hudsonia
Chomera china chobwezeretsa ndi phiri la Hudsonia, lomwe silimapezeka kawirikawiri kumadera ena a North Carolina, ndipo chomeracho sichipitirira zana. Masango ena amtchire amapezeka ku Pisgash Park.
M'magawo asanu a Kumpoto chakumadzulo, mutha kupeza orchid steppe orchid. Chiwerengero cha anthu chikuchepa chifukwa chamoto, kuweta ziweto komanso kutentha kwanyengo.
Nolton's pediocactus wokoma
Nolton's pediocactus wokoma amakhala ndi 25 mm kutalika ndi maluwa ang'onoang'ono ofiira oyera. Chomeracho ndi chaching'ono kwambiri kukula kwake, ndipo kuchuluka kwake sikunakhazikitsidwe.
Chomera cha Astra Georgia chili ndi maluwa okongola. M'mbuyomu, anthu anali ambiri, koma kwa zaka zopitilira 10 mitundu iyi ndiyosowa ndipo imafunika kutetezedwa kuti isathere.
