Poinsettias, which are cultivars of Euphorbia pulcherrima, set bracts
and flowers in response to short days.
However, when compared to Groups I and II, Group III showed a smaller diameter of the main stem, primary head length, bracts
base width, and outer bract
length (Table 3).
I am often asked how to get poinsettias to provide colour again for another year (the bract
colours fade as new growth commences in the spring).
As in most Alismataceae it bears bracts
in pseudowhorls of three, and all bracts
(except the very first) subtend lateral buds.
The samples of squares were separated into bracts
and floral buds.
Pollinators can perceive these organs as evidenced during pilot, bract
-removal experiments at the beginning of this study, when I observed that bees often approached the discarded bracts
on the ground.
Metre-high stems are loaded with large heads of flowers that have vivid orange bracts
It's mainly scarlet, but also available in white, salmon, rose, hot pink and burgundy, plus with variegated or mottled bracts
THESE hardy perennials are a brilliant choice for year-round interest, but it isn't the flowers that make them significant, it is the eye-catching bracts
, which appear in late spring or early summer.
8 cm in diameter, green, white lanate; peduncle bracts
ovate-lanceolate, acuminate and apiculate, erect, densely imbricate, 4.
If you want something different, try French lavender (L stoechas subspecies pedunculata), which grows to around two feet (60cm) and bears dark purple flower spikes topped by bright purple bracts
which look like rabbits'
It differs in the degree of inflorescence compounding, proportion of spikes that are peduncled, total number of spikes, as well as leaf width and the proportionate length of inflorescence bracts