Pages

Monday, November 28, 2022

More of aridland wildflower tray

Those big grasslike things in my last post about these have metamorphosed, developing spikes. Highly confident they're Navarettia hamata because no other angiosperm from Santa Fe Dam Recreation Area (where I collected the sand) seems to have spikes like that. The small spineless grasslike thing in the middle of this pic seems to be Linanthus dianthiflorus.

The succulents have gotten bigger but seem to have done nothing of much interest. Despite being annuals, they seem to be capable of asexually reproducing via stem fragments and detached leaves. I wonder if I can perennialize them by forcing them to regen from leaves too frequently for flower production (and thus blooming-related programmed death) to occur? After all, Physcomitrium has been perennialized in a very similar way (namely, being repeatedly ground to a pulp so often it can't make sporophytes). Also, I suspect that at least some of them may be invasive Crassula like C. tillaea.

Leaf propagation'll be a pain though. The leaves don't detach easily, and the stem is prone to snapping. In any case, at least one of my detached leaves is getting bigger, so fingers crossed!

Whatever this (and the unidentified thallus I mentioned Nov. 10) was have both died of dehydration. Several of the grassy spineleaves also show purple pigment as a result of heat stress. Look, I'm life-threateningly depressed, okay?


I also yanked out the probable Erodium on an impulse. Wish I kept it alive long enough for it to mature, but my depression seems to be making me uncontrollably impulsive.


Also this thing popped up a while ago. My god, those cotyledons are huge! (The cotyledons are the largest leaves in the pic if you 're wondering.) They look eerily similar to Pholistoma membranaceum cotyledons but the true leaves look different from that species. Some other Boraginaceae seem to have similar seedlings; I've tentatively ruled out various Cryptantha, Phacelia, Emmenanthe, Pectocarya, Amsinckia, Eucrypta, Borago, Heliotropium by searching various websites and looking at whether the cotyledons and/or true leaves look the same as the ones in my photograph.

Interestingly, the oval things at the tips of the cotyledon have remained more or less the same size as they were during germination whereas the rest has gotten steadily longer. The long part's the petiole I think?

No comments:

Post a Comment