09.04.2018 Views

Horticulture Principles and Practices

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

FIGURE 2–29 Parts of a typical<br />

grass flower: (a) a floret <strong>and</strong><br />

(b) a spikelet.<br />

Anther<br />

Fillament<br />

Rachilla<br />

Stigma<br />

Lemma<br />

Ovary<br />

Palea<br />

(a) floret<br />

(b) spikelet<br />

FIGURE 2–30 Fused petals<br />

of the family Solanaceae (nightshade<br />

family).<br />

Fused corolla<br />

Stamens attached<br />

to corolla tube<br />

Corolla tube<br />

Sepal<br />

Ray floret<br />

Stigma<br />

Corolla<br />

Female<br />

flower<br />

Disk floret<br />

Stamen<br />

Bristle<br />

Ovary<br />

Gl<strong>and</strong><br />

Male flower<br />

An inflorescence<br />

A floret<br />

An inflorescence <strong>and</strong> single floret of the family Asteraceae (sun-<br />

FIGURE 2–31<br />

flower family).<br />

FIGURE 2–32 A cyathium of the family Euphorbiaceae<br />

(spurge family).<br />

2.6.1 ANGIOSPERMS (FLOWERING PLANTS)<br />

Monocotyledons (Monocots)<br />

1. Poaceae (grass family). In terms of numbers, the grass family is the largest of<br />

flowering plants. It is also the most widely distributed. This family includes all of<br />

the cereals (e.g., wheat, barley, oats, rice, <strong>and</strong> corn). In horticulture, most grasses<br />

are ornamental <strong>and</strong> especially noted for their role as lawn material in the<br />

l<strong>and</strong>scape. Important grasses include the fescues (Festuca spp.) <strong>and</strong> bluegrass<br />

(Poa spp.). A popular grass used as a vegetable is sweet corn (Zea mays).<br />

2.6 Some Families of Horticultural Importance 57

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!