Some of the involucral bracts leaf-like, longer than the heads (3-20 dm.
Outer and middle involucralbracts appressed, pointless or with weak short prickles --57.
The involucral leaves necessarily stand, as being the radical leaves of the flower, at the bottom of the peduncles or flower-stalks; each flower-stalk therefore has usually an involucral or bracteal leaf also.
The involucral leaves stand upon a lower stage of development, are for the most part only squamose or spathiform, rarely divided or pinnate.
The vessels are quaternary in their distribution, and form a cross, like the involucral vessels of the chick.
Involucral bracts imbricated in 2 or more rows, the outer shorter.
Involucral leaves distinct, like those of the stem; perianth truncate-depressed at the apex.
Characters as in Kuhnia; involucral scales more numerous, and the bristles of the pappus merely scabrous or at the most barbellate or subplumose; leaves often all opposite.
Arisarum vulgare) with a spathe or involucral leaf resembling a cowl.
Gold flower, a composite plant with dry and persistent yellow radiating involucral scales, the Helichrysum Stoechas of Southern Europe.
Arisarum vulgare) with a spathe or involucral leaf resembling a cowl.
The involucral spikelets are male or neuter, the largest, and consist of three glumes.
The inner pedicelled spikelets are similar to the involucral spikelets, but the third glume is very narrow, linear.
The pedicelled spikelets are similar to the involucral in every respect but smaller, male or neuter, but the first glume is not winged on the keels.
Pedicelled spikelets inside the involucral similar to those of the involucral.
The pedicelled spikelets are usually smaller than the involucral spikelets and similar to them.
The involucral spikelets are the longest, in contiguous superposed pairs, about 1/2 inch long, and the rachis of the spike is produced beyond these spikelets.
Arisarum vulgare) with a spathe or involucral leaf resembling a cowl.
In Umbelliferæ the substitution of leaves for involucral bracts is not infrequent.
Apostasis of the sub-floral or involucral leaves is not of infrequent occurrence in malformations affecting Compositæ and Umbelliferæ.
A similar lengthening occurs in the involucral leaves of Umbelliferæ and Compositæ, changing very materially the general aspect of the inflorescence.
In some of the cultivated double varieties of Nigella the finely divided involucral bracts are repeated over and over again, but on a diminished scale, to the exclusion of all the other parts of the flower.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "involucral" in a variety of sentences. We hope that you will now be able to make sentences using this word.
