Lobivia andalgalensis Weber

Cereus huascha rubriflorus Weber in Schumann, Monatsschr. Kakteenk. 3: 151. 1893.

Cereus andalgalensis Weber in Schumann, Gesamtb. Kakteen 168. 1897.

Plants single or clustered, globular or a little flattened, 3 to 10 cm. in diameter, green; ribs about 13, stout, hardly crenate; areoles 5 to 10 mm. apart, circular; spines white, subulate, straight; radial spines 8 to 10, about equal, 5 to 7 mm. long; central spine solitary, stouter than the radials, 10 to 25 mm. long, porrect; flowers fugacious, short-funnelform, about 6 cm. long, green without; flower-tube and ovary bearing scales, with long, gray appressed hairs in their axils; inner perianth-segments red, oblanceolate or subspatulate, 1.8 to 2.5 cm. long, obtuse or retuse; filaments reddish purple; style pale red or yellow; stigma-lobes about 9.

BRITTON AND ROSE, VOL. III

PLATE V

Andalgala Cactus

1. Top of flowering plant of Echinocereus engelmann

2. Flowering plant of Lobivia corbula.

3. Flowering plant of Lobiviapentlandii

4. Flowering plant of Lobivia lateritia.

(All natural size.)

Type locality: Andalgala, province of Catamarca, Argentina.

Distribution: Western Argentina.

This plant has passed as a variety of Cereus huascha, now Trichocereus huascha, but the two are so unlike that we have referred them to different genera. Both species are still little known and further study of them is much desired.

Figure 72 is from a photograph contributed by Dr. Spegazzini; figure 75 shows a flower collected by Dr. Shafer between Andalgala and Concepción, Argentina, in 1917 (No. 27).

15. Lobivia haematantha (Spegazzini).

Echinocactus haematanthus Spegazzini, Anal. Mus. Nac. Buenos Aires III. 4: 498. 1905.

Somewhat depressed, globose, 5 cm. high, 6 cm. in diameter, greenish, somewhat shining; ribs 11, somewhat tuberculate, obtuse; areoles nearly circular, 5 to 6 mm. in diameter, white-felted; radial spines 6 to 8, slender, 5 to 10 mm. long, more or less appressed; central spines 3, stouter than the radials, 5 cm. long, pale gray with yellowish tips; flowers 3 to 4 cm. broad; inner perianth-segments obovate to spatulate, obtuse, purplish; stigma-lobes 9 to 12, white; scales on ovary and flower-tube long-woolly.

Fig. 73.—Lobivia haemathanta. Fig. 74.—Lobivia thionanthus.

Type locality: Near Amblaio, province of Salta, Argentina. Distribution: Known only from the province of Salta, Argentina. We know the plant only from photographs and the description. Figure 73 is from a photograph contributed by Dr. Spegazzini.

Continue reading here: Lobivia grandiflora sp nov

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