pinnae

Directory

References

Discover

The tomb of Saint Nicholas in the crypt of the Basilica di San Nicola, Bari, Apulia, Italy

Do the Relics of Saint Nicholas Really Emit a Holy Substance?

Dr. Martin Luther King Jr. addresses marchers during his "I Have a Dream" speech at the Lincoln Memorial in Washington. August 28th 1963

Was Martin Luther King, Jr., a Republican or a Democrat?

Leonardo da Vinci (1452-1519), Italian Renaissance painter from Florence. Engraving by Cosomo Colombini (d. 1812) after a Leonardo self portrait. Ca. 1500.

10 Famous Artworks by Leonardo da Vinci

Cheetah (Acinonyx jubatus) standing on rock, side view, Masai Mara National Reserve, Kenya

The Fastest Animals on Earth

Lusitania sinking, illustration from The War of the Nations (New York), December 31, 1919. World War I, WWI. This image is one of three on the page. (See source file for the other two.)

7 of the World’s Deadliest Shipwrecks

Ruminant. Deer. Red deer. Cervus elaphus. Buck. Stag. Antlers.

9 of the World’s Deadliest Mammals

Thanksgiving Celebration Traditional Dinner Setting Food Concept

Why Is Thanksgiving in the U.S. Celebrated on a Thursday?

pinnae

plant anatomy

Learn about this topic in these articles:

cycadophytes

In cycadophyte: Leaves
Cycas pinnae also have midribs, but these lack side veins altogether. Pinnae of all other cycads have dichotomously branching, more or less parallel veins. The size of the cycad leaf is variable; Zamia pygmaea, the smallest cycad, has leaves about 20–30 cm long, while some species…
Read More

ferns

In fern: Shapes
…having obviously stalked leaflets, or pinnae. The pinnae themselves may also be lobed or truly divided with stalked segments; and the resulting segments, the pinnules, may also be lobed or divided. Depending on the degree of cutting, fronds are described as simple, once divided, twice divided, thrice divided, and so…
Read More