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APPENDIX 



pediceled flowers. 



Rachilla 26 



Ray. A floret in the composites 

 with a strap-shaped corolla. 



Receptacle. 8. The end of the 

 flower-stalk to which the parts 

 of the flower are attached. The 

 surface on which the florets are 

 attached in a head of flowers. 



Regular 19 



Retrorse. Bent backwards or 

 downwards. 



Rhizome. A horizontal under- 

 ground stem. 



Rootstock. A rhizome. 



Rostellum. A beak-like append- 

 age of the stigma in the or- 

 chids. 



Sagittate. Shaped like an arrow- 

 head. 



Samara. A one-seeded winged 

 fruit as that of the ash or elm. 



Scabrous. Rough. 



Scape 29 



Scarious. Thin, dry, membranous 

 and not green. 



Secund. Bearing flowers only on 

 one side of the axis. 



Sepal 10 



Septicidal 22 



Serrate. With teeth projecting 

 forward like saw-teeth. 



Serrulate. Serrate with small 

 teeth. 



Sessile. Without a stalk. 9. 23. 



Setose. Bristly. 



Sheath 24 



Silicle. A short silique. 



Silique. The narrow two-valved 

 pod of the mustards. 



Sinuate; With wavy margins. 



Sinus. The space between the 

 lobes of a leaf. 



Spadix. An elongated cluster of 

 sessile flowers on a fleshy axis. 



Spathe, A large bract inclosing 

 an inflorescence. 



Spatulate. Narrowed at the base 

 with a broader rounded apex. 



Spicate. Borne in spikes. 



Spike. An inflorescence consist- 

 ing of spikelets on a simple 

 axis. 



Spikelet 26 



Squarrose. Spreading or recurved 



at the end. 



Stamen 10 



Staminodium 13 



Staminate 13 



Standard. The large upper petal 



of a pea-flower. 



Stigma 9 



Stipe. The stalk of a pistil or 



fruit by which they are attached 



to the receptacle. 

 Stipitate. Having a stipe. 



Stipules 23 



Stolon. A prostrate or decumbent 



branch which roots at the 



nodes, a runner. 

 Stoliniferous. With stolons. 

 Strigose. With appressed stiff 



hairs. 



Style 9 



Syngenesious 15 



Terete. Circular in cross-section; 



round. 

 Thyrsus or Thyrse. A contracted 



panicle. 

 Tomentose. Covered with dense 



wooly hair. 

 Tuber. A short, thick enlarge- 

 ment of an underground branch, 



as the potato. 

 Tubercle. A knob-like outgrowth 



or enlargement, a callosity. 

 Umbel. A flower-cluster whose 



branches arise from the same 



point. 

 Umbel let. A secondary umbel, 



formed on the branches of an 



umbel. 

 Utricle. A small bladdery one- 

 seeded fruit. 

 Valvate. With the edges touch- 

 ing, but not overlapping. 

 Vein. A strand of fibro-vascular 



tissue in a lear. 

 Venation. The arrangement of 



the veins in a leaf. 

 Vernation. The arrangement of 



leaves or parts of the parianth 



in the bud. 

 Verticillate. Arranged in whorls. 

 Villous. With long, soft hairs. 

 Whorl. A circle of leaves or 



other organs at a node. 

 Zygomorphis. Irregular. 



