24.03.2013 Views

Aloes and Lilies of Ethiopia and Eritrea

Aloes and Lilies of Ethiopia and Eritrea

Aloes and Lilies of Ethiopia and Eritrea

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

284 DRACAENACEAE<br />

Key to the species<br />

1. Plants without easily seen aerial stems; leaves flat or if cylindrical,<br />

without a channel at the base 2<br />

- Plants with a short areal stem; leaves laterally compressed or<br />

cylindrical with a channel at the base 5<br />

2. Leaves cylindrical 3<br />

- Leaves flat or nearly flat 4<br />

3. Leaves solitary 3. S. fischeri<br />

- Leaves several together 4. S. erythraeae<br />

4. Leaves with acute, brown, apical points <strong>and</strong> red-brown margins<br />

6. S. forskaoliana<br />

- Leaves with s<strong>of</strong>t green subulate points <strong>and</strong> green margins 5. S. nilotica<br />

5. Stem up to 10 cm high, branching at or near the ground, leaves channelled<br />

for about 2 cm at the base, otherwise cylindrical 2. S. phillipsiae<br />

- Stem up to 23 cm high, not branching, leaves laterally compressed,<br />

with a channel throughout their length 1. S. ehrenbergii<br />

Sansevieria<br />

shrenbergii<br />

Description<br />

1. Sansevieria ehrenbergii Schweinf. ex Baker<br />

The specific epithet ‘ehrenbergii’ refers to the German<br />

botanist Ehrenberg.<br />

The name was proposed by Schwein furth, <strong>and</strong> the<br />

species was formally described by Baker in 1875 from a<br />

plant collected in the Sudan.<br />

It differs from the related species, S. phillipsiae, by<br />

the leaves being laterally compressed <strong>and</strong> channeled<br />

throughout their length. In contrast, S. phillipsiae has<br />

leaves cylindrical <strong>and</strong> channeled only for about 2 cm<br />

from base.<br />

Xerophytic plants with stems up to 25cm tall, usually concealed by<br />

leaf bases. Leaves 5–9, crowded, 2­ranked, erect or more or less<br />

spreading fan­wise, up to 1m or more long, laterally compressed,<br />

with flattened sides, rounded on the back, tapering upwards, rather<br />

abruptly ending in a stout hard spine­like point about 2 cm long;<br />

margins reddish­brown, with white membranaceous edges which get<br />

wider than the rest <strong>of</strong> the leaf at the base. Inflorescence a panicle up<br />

to 2 m long, much branched in the upper ¾ <strong>of</strong> its length; branches up<br />

to 25 cm or more long, curved, ascending, the lower ones branched<br />

again, the upper ones simple. Flowers 4–7 in a cluster, pedicels 2–4

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

Saved successfully!

Ooh no, something went wrong!