bracts (12 kg) were cut into pieces and repeatedly extracted with EtOH (4 X 51) at room temperature.
More advanced species have additional layers of defense of flowers, fruits, and/or leaves, including envelopment of flowers and fruits by closed involucral
bracts and sepals, and deployment of resin and long, sharp trichomes.
They were observed on the tepals, bracts, bracteoles and involucral
Pilosellina must have stellate trichomes also on adaxial surface of leaves, stolons absent or, if present, scarce, short and relatively thick and thin involucral
bracts with abundant and dominant long simple eglandular trichomes and more or less abundant stellate trichomes: in this area it can only be P.
5 mm de largo, las exteriores por lo comun mas cortas y angostas, por lo general todas glabras, receptaculo conico, paleas exteriores anchamente elipticas a obovadas, a menudo lobadas en el apice, agrupadas en conjuntos de 2 o 3 y rodeando al aquenio de la flor periferica en union con la bractea involucral
adyacente, las paleas interiores lanceoladas a obovadas, por lo comun mas o menos profundamente trifidas, rara vez bifidas o enteras, cafes; flores perifericas (3)5(8), su tubo de ca.
Nature of distal involucral
bract: 0, stipuliform; 1, involucral
The inflorescences also have longer bracts, with the longest (lowest) involucral
bract being 1.
Muthama Muasya (Nairobi, Kenya) our specimen falls within the variability of Cyperus imbricatus although some characteristics are more or less aberrant: involucral
bracts slightly wider, culms slightly thicker, inflorescence branches somewhat longer,.
Morlin plants have spines on the tip and along the margins of the leaves and involucral
From the Greek hyaleos, of glass, transparent, probably because of the light color of the leaves or the shiny, scarious involucral
Montola 2000 plants have spines on the leaf tips, along leaf margins, and involucral
The extinct genus Paleocarpinus from the Paleocene of England, France, and western North America produced flattened, ribbed nutlets between two leafy, involucral
bracts (Crane, 1989) that may have been wind dispersed.