PLANT ORGANS AND ORGANISMS 163 
Spatulate, like a spatula, with narrow base and broad rounded 
apex. Example: Uva Ursi. 
Ensiform, when shaped like a sword. Example: Calamus. 
Acerose or acicular, tipped with a needle-like point, as Juniper. 
Falcate , sythe or sickel shaped as Eucalyptus. 
Deltoid , when the shape of the Greek letter A, as Chenopodium. 
(b) Apex of Leaf.— Acute , when the margins form an acute angle 
at the tip of the leaf. Examples: Eriodictyon, Digitalis. 
Acuminate, when the point is longer and more tapering than the 
acute. Examples: Pellitory, Coffee. 
Obtuse , blunt or round. Example: Long Buchu. 
Truncate, abruptly obtuse, as if cut square off. Example: Meli- 
lotus leaflets. 
Mucronate, terminating in a short, soft point. Example: Senna 
leaflets. 
Cuspidate, like the last, except that the point is long and rigid. 
Aristate, with the apex terminating in a bristle. 
Emarginate, notched. Example: Pilocarpus. 
Retuse, with a broad, shallow sinus at the apex. Example: Petal 
of Rosa gallica. 
Obcordate, inversely heart-shaped. Example: Oxalis. 
(c) Base or Leaf.— Cordate, heart-shaped. Examples: Lime and 
Coltsfoot. 
Reniform, kidney-shaped. Examples: Ground Ivy, Asarum. 
Hastate, or halbert-shaped, when the lobes point outward from 
the petiole. Example: Aristolochia Serpentaria. 
Auriculate, having ear-like appendages at the base. Example: 
Philodendron. 
Sagittate, arrow-shaped. Example: Bindweed. 
Cuneate, wedge shaped. Examples: Short Buchu and Uva Ursi. 
( d ) Margin of Leaf.— Entire, when the margin is an even line. 
Example: Belladonna. 
Serrate, with sharp teeth which incline forward like the teeth of a 
hand-saw. Examples: Peppermint, Yerba Santa, Buchu. 
Dentate, or toothed, with outwardly projecting teeth. Chestnut. 
Crenate, or Scalloped, similar to the preceding forms, but with the 
teeth much rounded. Examples: Digitalis, Salvia. 
